Lead Contributors:
Rob Beddingfield
Kliment Yanev�Marcin Jakubowski
Joshua Pearce
Gerald Anzalone
Graphic Design:
Jean-Baptiste Vervaeck
Version:
Date:
Compressed Earth Block Press v6
(Beddingfield Edition)
Open Source Ecology Developer’s Manual
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Ok. How about a map of all collaborators? Nice infographic would help honor the community and motivate contributors.
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Table of contents
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I. Preface
i. GVCS
ii. Development Method
iii. Distributive Enterprise
1. Machine Introduction
1.1. The liberator story
1.1. Design problem statement
1.1.1. Range of Motion Design
1.1.2. CAE analysis
1.1.3. 3D CAD Review
1.1.4. Functional Diagram
2. Operating procedure
2.1 Test procedures and data collection
2.2 Trouble Shooting
2.3 Suggestions and solutions...
3. Crash Courses from Zero to Creator
3.1. OpenSCAD / Fritzing / Sketchup
3.2. FreeCAD / LibreCAD / OpenShot
3.3. Explainer Video Production / Houdini / RecordMyDesktop
3.4. Dozuki+OSHW+oManual
4. Modules, Parts and Materials
4.1. Module Diagram
4.2. Explainer Video
4.3. Exploded Parts Diagram
4.4. Part list
4.5. blank
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5. Build Preparations
5.1. Master review checklist for build
5.5. List of tools, consumables, infrastructure
5.2. Prototype Build Review
5.4. Visual Bill of Materials
5.5. Fabrication Diagram
5.3. Fabrication Drawings & Videos
5.4. Cut list
6. Assembly summary
6.1. Compression Chamber frame
6.1.1. Module description
6.1.2. Tutorial summary
6.2. Suppport Frame module
6.2.1. Module description
6.2.2. Tutorial summary
6.3. Hopper module
6.3.1. Module description
6.3.2. Tutorial summary
6.4. Control Console
6.4.1. Module description
6.4.2. Tutorial summary
7. Build Procedure Summary
7.1. Quality Control Checklist
7.2. Build Time Data
7.3. Build Time Lapse
7.3. Build session pictures
7.4. Build session video
8. Hydraulics
8.1. blank
8.2. Overview
8.3. Hydraulics diagram
8.4. Main Cylinder Circuit
8.5. blank
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List of illustrations
List of tables
Acronyms and definitions
1.1 GVCS
1.2 Development Method
1.3 Distributive Enterprise
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9. Electronics
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9.2. blank
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9.4. blank
9.5. blank
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The Global Village Construction Set
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i. GVCS
ii. Development Method
iii. Distributive Enterprise
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The Global Village Construction Set
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The Global Village Construction Set
GVCS
Development Method
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The Liberator has been fully designed and tested by the Open Source Ecology team. Because the Liberator is an open source technology, you can freely download instructions to build your own from materials you can obtain yourself, or contact opensourceecology[at]gmail[dot]com to buy a kit or a finished machine.
Building a machine yourself might seem intimidating, but every step of the process is fully documented and the OSE community is available on our discussion forum if you need help, advice, or a little hand-holding.
Using the CEB Press, two people can build a 6 foot high (1.83m) round wall, 20 feet (6.1m) in diameter, 1 foot (30cm) thick, in one 8 hour day, though construction time will vary somewhat depending on preparation time, what equipment is available (tractor to prepare the ground and move the blocks where they need to go), the quality of the soil, and other factors. The bigger the block size, the faster a wall can be erected, but at the cost of heavier blocks that are more of a strain to work with. Blocks from The Liberator average 25 pounds (11.3kg).
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam a eros quis nisi sagittis cursus vitae sit amet felis. Nulla facilisi. Quisque varius varius sem, sit amet condimentum sem consequat in. Aliquam sed massa posuere, cursus arcu sed, tempor nibh. Ut eu varius enim. Cras ac leo eget enim ornare vehicula sed nec magna. Etiam lectus ipsum, varius sed tortor id, consectetur iaculis justo. Praesent blandit dapibus tortor, vita The Liberator has been fully designed and tested by the Open Source Ecology team.
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The Global Village Construction Set
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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris elit turpis, mattis eget nibh quis, euismod volutpat lacus. Aliquam erat volutpat. Pellentesque condimentum consectetur volutpat. Nullam rutrum lectus ac ipsum sagittis, ac interdum justo adipiscing. Phasellus quis dapibus orci. Vivamus consequat blandit orci, eu rutrum ipsum. Duis mollis turpis eros, at vehicula magna posuere nec. Sed cursus erat ut tortor condimentum, in fermentum nisl laoreet. Praesent id lectus quis sem eleifend euismod eu quis augue. Nullam sapien urna, fringilla et leo ut, tincidunt viverra erat. Nam arcu massa, dignissim nec eros nec, laoreet volutpat nulla. Integer a sem at sem porttitor accumsan in nec risus. Nullam id luctus metus. Maecenas et lobortis orci. Integer id gravida ipsum, non rhoncus felis.
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1.3 Bird´s eye view: semper nulla nec, lobortis velit. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.
Distributive Enterprise
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The Global Village Construction Set
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The Liberator has been fully designed and tested by the Open Source Ecology team. Because the Liberator is an open source technology, you can freely download instructions to build your own from materials you can obtain yourself, or contact opensourceecology[at]gmail[dot]com to buy a kit or a finished machine.
Building a machine yourself might seem intimidating, but every step of the process is fully documented and the OSE community is available on our discussion forum if you need help, advice, or a little hand-holding.
Using the CEB Press, two people can build a 6 foot high (1.83m) round wall, 20 feet (6.1m) in diameter, 1 foot (30cm) thick, in one 8 hour day, though construction time will vary somewhat depending on preparation time, what equipment is available (tractor to prepare the ground and move the blocks where they need to go), the quality of the soil, and other factors. The bigger the block size, the faster a wall can be erected, but at the cost of heavier blocks that are more of a strain to work with. Blocks from The Liberator average 25 pounds (11.3kg).
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam a eros quis nisi sagittis cursus vitae sit amet felis. Nulla facilisi. Quisque varius varius sem, sit amet condimentum sem consequat in. Aliquam sed massa posuere, cursus arcu sed, tempor nibh. Ut eu varius enim. Cras ac leo eget enim ornare vehicula sed nec magna. Etiam lectus ipsum, varius sed tortor id, consectetur iaculis justo. Praesent blandit dapibus tortor, vita The Liberator has been fully designed and tested by the Open Source Ecology team.
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The Global Village Construction Set
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1. Machine Introduction
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1.1. The liberator story
1.2. Design problem statement
1.3. CEB 6 Overall Requirements
1.4. Range of Motion Design
1.5.1 CAE analysis
1.5.2. 3D CAD Review
1.6. Functional Diagram
1.7. CEB Specifications
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1. Machine Introduction
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1. Machine Introduction
The "Liberator" Compressed Earth Block Press is a machine that makes compressed earth blocks (CEBs). The CEB Press takes earth/dirt/soil and compresses it tightly to make solid blocks useful for building. Compressed earth blocks have many advantages as a building material: by making the building materials from the readily available dirt on the building site, they eliminate the need to transport bricks from elsewhere, reducing the financial cost and environmental impact of transport.
Compressed earth blocks are very strong and insulate well against both heat and sound, making for very energy-efficient building (especially combined with the energy savings from not needing to transport them from offsite). Best of all, the material they use is already on-site and does not need to be purchased -- quite literally, dirt-cheap!
1.1 Note: We no longer consider this to be a Full Product Release because this is an older version of the machine. Further prototypes and improvements have been made, see update post of Sep. 24, 2012.
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The liberator Story
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1. Machine Introduction
Design Problem Statement
Product Ecology
The Liberator has been fully designed and tested by the Open Source Ecology team. Because the Liberator is an open source technology, you can freely download instructions to build your own from materials you can obtain yourself, or contact opensourceecology[at]gmail[dot]com to buy a kit or a finished machine.
Building a machine yourself might seem intimidating, but every step of the process is fully documented and the OSE community is available on our discussion forum if you need help, advice, or a little hand-holding.
Using the CEB Press, two people can build a 6 foot high (1.83m) round wall, 20 feet (6.1m) in diameter, 1 foot (30cm) thick, in one 8 hour day, though construction time will vary somewhat depending on preparation time, what equipment is available (tractor to prepare the ground and move the blocks where they need to go), the quality of the soil, and other factors. The bigger the block size, the faster a wall can be erected, but at the cost of heavier blocks that are more of a strain to work with. Blocks from The Liberator average 25 pounds (11.3kg).
Duis mollis turpis eros, at vehicula magna posuere nec. Sed cursus erat ut tortor condimentum, in fermentum nisl laoreet. Praesent id lectus quis sem eleifend euismod eu quis augue. Morbi a tincidunt sem, non hendrerit velit. Integer tincidunt, justo ac dictum pretium mauris.
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1. Machine Introduction
CEB 6 Overall Requirements
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1. Machine Introduction
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Range of motion
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris elit turpis, mattis eget nibh quis, euismod volutpat lacus. Aliquam erat volutpat. Pellentesque condimentum consectetur volutpat. Nullam rutrum lectus ac ipsum sagittis, ac interdum justo adipiscing. Phasellus quis dapibus orci. Vivamus consequat blandit orci, eu rutrum ipsum. Duis mollis turpis eros, at vehicula magna posuere nec. Sed cursus erat ut tortor condimentum, in fermentum nisl laoreet. Praesent id lectus quis sem eleifend euismod eu quis augue. Nullam sapien urna, fringilla et leo ut, tincidunt viverra erat. Nam arcu massa, dignissim nec eros nec, laoreet volutpat nulla. Integer a sem at sem porttitor accumsan in nec risus. Nullam id luctus metus. Maecenas et lobortis orci. Integer id gravida ipsum, non rhoncus felis.
Morbi a tincidunt sem, non hendrerit velit. Integer tincidunt, justo ac dictum pretium, libero tortor tristique nulla, vitae consectetur arcu est quis nisi. Nullam urna urna, vulputate sit amet dapibus rhoncus, vehicula sit amet justo. Cras sit amet dignissim nibh, at pellentesque augue. Morbi bibendum felis et laoreet fringilla. Nunc ut luctus mauris. Nam cursus posuere turpis sit amet suscipit. Ut id est convallis turpis ultrices tempus a non tellus. In hac habitasse platea dictumst.
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1.3 Bird´s eye view: semper nulla nec, lobortis velit. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.
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1. Machine Introduction
CAE analysis
3D CAD Review
The Liberator has been fully designed and tested by the Open Source Ecology team. Because the Liberator is an open source technology, you can freely download instructions to build your own from materials you can obtain yourself, or contact opensourceecology[at]gmail[dot]com to buy a kit or a finished machine.
Building a machine yourself might seem intimidating, but every step of the process is fully documented and the OSE community is available on our discussion forum if you need help, advice, or a little hand-holding.
Using the CEB Press, two people can build a 6 foot high (1.83m) round wall, 20 feet (6.1m) in diameter, 1 foot (30cm) thick, in one 8 hour day, though construction time will vary somewhat depending on preparation time, what equipment is available (tractor to prepare the ground and move the blocks where they need to go), the quality of the soil, and other factors. The bigger the block size, the faster a wall can be erected, but at the cost of heavier blocks that are more of a strain to work with. Blocks from The Liberator average 25 pounds (11.3kg).
The Liberator has been fully designed and tested by the Open Source Ecology team. Because the Liberator is an open source technology, you can freely download instructions to build your own from materials you can obtain yourself, or contact opensourceecology@gmail.com to buy a kit or a finished machine.
Building a machine yourself might seem intimidating, but every step of the process is fully documented and the OSE community is available on our discussion forum if you need help, advice, or a little hand-holding.
Using the CEB Press, two people can build a 6 foot high (1.83m) round wall, 20 feet (6.1m) in diameter, 1 foot (30cm) thick, in one 8 hour day, though construction time will vary somewhat depending on preparation time, what equipment is available (tractor to prepare the ground and move the blocks where they need to go), the quality of the soil, and other factors. The bigger the block size, the faster a wall can be erected, but at the cost of heavier blocks that are more of a strain to work with. Blocks from The Liberator average 25 pounds (11.3kg).
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1. Machine Introduction
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Functional Diagram
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris elit turpis, mattis eget nibh quis, euismod volutpat lacus. Aliquam erat volutpat. Pellentesque condimentum consectetur volutpat. Nullam rutrum lectus ac ipsum sagittis, ac interdum justo adipiscing. Phasellus quis dapibus orci. Vivamus consequat blandit orci, eu rutrum ipsum. Duis mollis turpis eros, at vehicula magna posuere nec. Sed cursus erat ut tortor condimentum, in fermentum nisl laoreet.
1.3 Bird´s eye view: semper nulla nec, lobortis velit. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.
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1. Machine Introduction
Bricks per minute output
Brick size
People operating machine
Power source
Machine mounting
Hydraulic pressure
Hydraulic cylinder
Pressing cylinder pressure
Controls
Compressive strength of bricks
Materials:
Height:
Machine lifetime goals:
Fabrication time requirement for optimized production:
Manual fabrication tooling requirements:
Optimal fabrication tooling:
Material costs:
16
12" x 6" x 4" to 6" (30.5x15.3x10.2 cm)
1-2
Tractor hydraulics or any hydraulic power source with 6 gallon per minute capacity (22.71 liters per minute)
stand-alone foot
2000psi / 137.90 bar
5 inch diameter, 19.6 inch area; 2.5 inch rod
39,250 lb pushing force (~18 tons)
2 spool, manual, hydraulic valve; fully automatic
795psi (54.81 bar) using plain earth.
1200psi (82.74 bar) with 10% Portland cement.
Structural cold rolled steel construction throughout
6 foot 11 inches/ 210.82 cm
1 million bricks before repairs; liner may be replaced every 100,000 bricks
3-5 days, about 20 hours of direct fabrication
drill press, welder, acetylene torch
XYZ table with torch, MIG welder, hoist
$1000-1350
Specifications
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1. Machine Introduction
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2. Operating Procedure
2.1 Section Overview
2.1.1 Operation, Safety and Maintenance
2.1.2 User Responsibilities
2.2 Operation
2.2.1 Procedures
2.3 Safety Considerations
2.3.1 Hydraulic Fluid Power
2.3.2 Moving Party Safety Issues
2.3.3 Heavy Weight Issues
2.3.4 Electronics Safety
2.3.5 Power Unit Safety
2.3.6 Workflow Safety Issues
2.3.7 Weather Issues
2.3.8 Safety Features
2.4 Maintenance
2.4.1 Troubleshooting
2.4.2 Test procedures and data collection
2.4.3 Suggestions and solutions
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2. Operating Procedure
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Overview
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Physics:�Why the CEB press works?
The User should acknowledge first that the Machine is a heavy piece of powered equipment, and poses inherent risks of injury or death that may result from improper usage or accidents. If all operating, safety, and maintenance procedures are followed, these risks are minimized or nonexistent.
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Bricks are made of 20%-30% clay, the rest being sand and silt. A combination of mechanical and electrostatic forces is responsible for the high strength of compressed earth blocks.
Compression physically removes voids from the earth. As particles come closer, mechanical forces of rough particles touching each other lock particles into place. For microscopic particles of clay, which are less than 4 microns in size - electrostatic forces of intermolecular attraction begin to play a role.
For stabilized bricks, chemical binding forces of the binder - such as cement - are responsible for the strength. Cement binders tend to bind larger particles of sand and aggregate, and lime binders tend to bind the finer particles of clay.
It appears that the exact nature of the large compressive strength of pressed earth is not well understood.
Inherent risks for the Machine arise from several sources:
Data Collection
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2. Operating Procedure
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Results and Improvements Made
Improvements needed
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The brick pressing rate: maximum of 16 thin bricks per minute with 54 hp, without using grate shaker
The main addition to the CEB machine design since last year is the increase of machine height from an 8" to a 12" main pressing cylinder, so that the resulting bricks are (2"-6")x6"x12" as opposed to the (2"-4") bricks.
�The compression chamber front and back u-channel was reinforced with a 1/2"x2" bar along its length to prevent it from bulging out; this failure was not observed in Prototype I and II because the width of the main chamber was 4" and 3" smaller
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2. Operating Procedure
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Basic Operation
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2. Operating Procedure
Trouble Shooting
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2. Operating Procedure
Suggestions & Solutions
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3. Crash Courses from
Zero to Creator
3.1. Introduction
3.2. OpenSCAD / Fritzing / Sketchup
3.3. FreeCAD / LibreCAD / OpenShot
3.4. Explainer Video Production / Houdini / RecordMyDesktop
3.5. Dozuki+OSHW+oManual
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3. from zero to maker
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Open Source Software
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3. from zero to maker
Software we use
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3. from zero to maker
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Trouble Shooting
What is Free CAD?
For more information...
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mi ut sodales dictum, felis velit ultricies mauris, quis viverra sapien nunc vestibulum odio. Nulla sed tristique lacus.
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FreeCAD is a 3D CAD/CAE parametric modeling application. It is primarily made for mechanical design, but also serves all other uses where you need to model 3D objects with precision and control over modeling history.
FreeCAD is still in the early stages of development, so, although it already offers you a large (and growing) list of features, much is still missing, specially comparing it to commercial solutions, and you might not find it developed enough yet for use in production environment. Still, there is a fast-growing community of enthusiastic users, and you can already find many examples of quality projects developed with FreeCAD.
Like all open-source projects, the FreeCAD project is not a one-way work delivered to you by its developers. It depends much on its community to grow, gain features, and stabilize (get bugs fixed). So don't forget this when starting to use FreeCAD, if you like it, you can directly influence and help the project!
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Duis mollis turpis eros, at vehicula magna posuere nec. Sed cursus erat ut tortor condimentum, in fermentum nisl laoreet. Praesent id lectus quis sem eleifend euismod eu quis augue. Morbi a tincidunt sem, non hendrerit velit. www.freecadweb.org
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3. from zero to maker
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Video tutorial series
FreeCAD:�Lorem ipsum dolor sit amet, consectetur adipiscing elit. In diam mauris, porta id nisl non, fringilla congue est. Morbi in vulputate sapien, vitae viverra elit. Integer nunc est, malesuada a viverra id, lobortis eget ipsum. Interdum et malesuada fames ac ante ipsum primis in faucibus. Donec posuere leo non nibh viverra, et lobortis mauris auctor. Quisque sit amet nisi velit. Etiam aliquet lacus in ligula consequat facilisis. Vestibulum scelerisque vehicula lectus id
LibreCAD:�Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aliquam pulvinar magna vitae nisl malesuada dapibus. Nullam non pellentesque tellus. Aenean tempus diam dolor, eget eleifend turpis elementum vel. Donec blandit sit amet orci quis aliquet. Sed hendrerit, sapien tincidunt ornare blandit, diam urna bibendum turpis, nec luctus sem lectus lacinia massa. Praesent non felis arcu. Donec vel placerat erat. Maecenas eu enim eget orci auctor auctor quis vel odio. Curabitur convallis porttitor turpis, a ultrices purus pulvinar in.
Open SCAD:�Lorem ipsum dolor sit amet, consectetur adipiscing elit. In diam mauris, porta id nisl non, fringilla congue est. Morbi in vulputate sapien, vitae viverra elit. Integer nunc est, malesuada a viverra id, lobortis eget ipsum. Interdum et malesuada fames ac ante ipsum primis in faucibus. Donec posuere leo non nibh viverra, et lobortis mauris auctor.
Getting Started�Lorem ipsum dolor sit amet, consectetur adipiscing elit. Duis blandit, magna nec lobortis hendrerit, mi metus luctus nulla, quis aliquam eros ipsum sed massa.
Installation� Pellentesque imperdiet neque magna, ac consequat lacus euismod non. Duis posuere eu nisi vel pulvinar.
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3. from zero to maker
OpenSCAD:�Lorem ipsum dolor sit amet, consectetur adipiscing elit. In diam mauris, porta id nisl non, fringilla congue est. Morbi in vulputate sapien, vitae viverra elit. Integer nunc est, malesuada a viverra id, lobortis eget ipsum. Interdum et malesuada fames ac ante ipsum primis in faucibus. Donec posuere leo non nibh viverra, et lobortis mauris auctor. Quisque sit amet nisi velit. Etiam aliquet lacus in ligula consequat facilisis. Vestibulum scelerisque vehicula lectus id
Read more...
Fritzing:�Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aliquam pulvinar magna vitae nisl malesuada dapibus. Nullam non pellentesque tellus. Aenean tempus diam dolor, eget eleifend turpis elementum vel. Donec blandit sit amet orci quis aliquet. Sed hendrerit, sapien tincidunt ornare blandit, diam urna bibendum turpis, nec luctus sem lectus lacinia massa. Praesent non felis arcu. Donec vel placerat erat. Maecenas eu enim eget orci auctor auctor quis vel odio. Curabitur convallis porttitor turpis, a ultrices purus pulvinar in.
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Sketchup:�Lorem ipsum dolor sit amet, consectetur adipiscing elit. In diam mauris, porta id nisl non, fringilla congue est. Morbi in vulputate sapien, vitae viverra elit. Integer nunc est, malesuada a viverra id, lobortis eget ipsum. Interdum et malesuada fames ac ante ipsum primis in faucibus. Donec posuere leo non nibh viverra, et lobortis mauris auctor.
Read more...
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3. from zero to maker
Explainer Video Production:�Lorem ipsum dolor sit amet, consectetur adipiscing elit. In diam mauris, porta id nisl non, fringilla congue est. Morbi in vulputate sapien, vitae viverra elit. Integer nunc est, malesuada a viverra id, lobortis eget ipsum. Interdum et malesuada fames ac ante ipsum primis in faucibus. Donec posuere leo non nibh viverra, et lobortis mauris auctor. Quisque sit amet nisi velit. Etiam aliquet lacus in ligula consequat facilisis. Vestibulum scelerisque vehicula lectus id
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3. from zero to maker
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3. from zero to maker
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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris elit turpis, mattis eget nibh quis, euismod volutpat lacus. Aliquam erat volutpat. Pellentesque condimentum consectetur volutpat. Nullam rutrum lectus ac ipsum sagittis, ac interdum justo adipiscing. Phasellus quis dapibus orci. Vivamus consequat blandit orci, eu rutrum ipsum. Duis mollis turpis eros, at vehicula magna posuere nec. Sed cursus erat ut tortor condimentum, in fermentum nisl laoreet. Praesent id lectus quis sem eleifend euismod eu quis augue. Nullam sapien urna, fringilla et leo ut, tincidunt viverra erat. Nam arcu massa, dignissim nec eros nec, laoreet volutpat nulla. Integer a sem at sem porttitor accumsan in nec risus. Nullam id luctus metus. Maecenas et lobortis orci. Integer id gravida ipsum, non rhoncus felis.
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Explainer Video Production:�Lorem ipsum dolor sit amet, consectetur adipiscing elit. In diam mauris, porta id nisl non, fringilla congue est. Morbi in vulputate sapien, vitae viverra elit. Integer nunc est, malesuada a viverra id, lobortis eget ipsum. Interdum et malesuada fames ac ante ipsum primis in faucibus. Donec posuere leo non nibh viverra, et lobortis mauris auctor. Quisque sit amet nisi velit. Etiam aliquet lacus in ligula consequat facilisis. Vestibulum scelerisque vehicula lectus id
Houdini:�Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aliquam pulvinar magna vitae nisl malesuada dapibus. Nullam non pellentesque tellus. Aenean tempus diam dolor, eget eleifend turpis elementum vel. Donec blandit sit amet orci quis aliquet. Sed hendrerit, sapien tincidunt ornare blandit, diam urna bibendum turpis, nec luctus sem lectus lacinia massa. Praesent non felis arcu. Donec vel placerat erat. Maecenas eu enim eget orci auctor auctor quis vel odio. Curabitur convallis porttitor turpis, a ultrices purus pulvinar in.
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4. Modules & Parts
4.1. Module Diagram
4.2. Explainer Video
4.3. Exploded Parts Diagram
4.4. Part list
4.5. blank
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4. Modules & Parts
Heading
The Liberator has been fully designed and tested by the Open Source Ecology team. Because the Liberator is an open source technology, you can freely download instructions to build your own from materials you can obtain yourself, or contact opensourceecology[at]gmail[dot]com to buy a kit or a finished machine.
Building a machine yourself might seem intimidating, but every step of the process is fully documented and the OSE community is available on our discussion forum if you need help, advice, or a little hand-holding.
Using the CEB Press, two people can build a 6 foot high (1.83m) round wall, 20 feet (6.1m) in diameter, 1 foot (30cm) thick, in one 8 hour day, though construction time will vary somewhat depending on preparation time, what equipment is available (tractor to prepare the ground and move the blocks where they need to go), the quality of the soil, and other factors. The bigger the block size, the faster a wall can be erected, but at the cost of heavier blocks that are more of a strain to work with. Blocks from The Liberator average 25 pounds (11.3kg).
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4. Modules & Parts
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4. Modules & Parts
1. Hopper
2. Grate
3. Hopper shaker
4. Frame
5. Compression chamber
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2.
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9.
Figure 00-00 CEB Brick Press
CEB Support Frame
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4. Modules & Parts
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Part list and dimensions
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4. Modules & Parts
Figure 00-00 CEB Brick Press
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4. Modules & Parts
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4. Modules & Parts
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4. Modules & Parts
Hopper
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Quick Reference
Documentation
Compression Chamber Frame
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4. Modules & Parts
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Part list and dimensions
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5. Build Preparations
5.1. Master review checklist for build
5.5. List of tools, consumables, infrastructure
5.2. Prototype Build Review
5.4. Visual Bill of Materials
5.5. Fabrication Diagram
5.3. Fabrication Drawings & Videos
5.4. Cut list
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5. Build Preparations
Master Review Checklist for build
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4. Modules & Parts
Master Review Checklist for build
Comments and observations
This text needs to be replaced, it is just simulated. The Liberator has been fully designed and tested by the Open Source Ecology team. Because the Liberator is an open source technology, you can freely download instructions to build your own from materials you can obtain yourself, or contact opensourceecology[at]gmail[dot]com to buy a kit or a finished machine.
Building a machine yourself might seem intimidating, but every step of the process is fully documented and the OSE community is available on our discussion forum if you need help, advice, or a little hand-holding.
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5. Build Preparations
List of Tools
Consumables
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4. Modules & Parts
Infrastructure
Master Review Checklist for build
This text needs to be replaced, it is just simulated. The Liberator has been fully designed and tested by the Open Source Ecology team. Because the Liberator is an open source technology, you can freely download instructions to build your own from materials you can obtain yourself, or contact opensourceecology[at]gmail[dot]com to buy a kit or a finished machine.
Building a machine yourself might seem intimidating, but every step of the process is fully documented and the OSE community is available on our discussion forum if you need help, advice, or a little hand-holding.
Prototype Build Review
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5. Build Preparations
Visual Fabrication Diagram
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4. Modules & Parts
Master Review Checklist for build
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5. Build Preparations
Fabrication Drawings and Videos
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4. Modules & Parts
Master Review Checklist for build
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5. Build Preparations
Cut List
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6. Assembly Summary
6.1. Compression Chamber
6.2. Drawer
6.3. Main support frame
6.4. Hopper
6.5. Controller
6.6. Grate
6.7. Shaker
6.8. Arms and legs
6.9. Supports and mounts
6.10. Hydraulics
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6.1. Compression Chamber frame
6.1.1. Module description
6.1.2. Tutorial summary
6.2. Support Frame module
6.2.1. Module description
6.2.2. Tutorial summary
6.3. Hopper module
6.3.1. Module description
6.3.2. Tutorial summary
6.4. Control Console
6.4.1. Module description
6.4.2. Tutorial summary
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6. Assembly Summary
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Compression Chamber
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6. Assembly Summary
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Hopper
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6. Assembly Summary
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Four step Process
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6. Assembly Summary
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Four step Process
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6. Assembly Summary
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Main Frame U Channel
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6. Assembly Summary
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6. Assembly Summary
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6. Assembly Summary
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6. Assembly Summary
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6. Assembly Summary
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7. Build Procedure Summary
7.1. Quality Control Checklist
7.2. Build Time Data
7.3. Build Time Lapse
7.3. Build session pictures
7.4. Build session video
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7. Build Procedure Summary
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7. Build Procedure Summary
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8. Hydraulics
8.1. blank
8.2. Overview
8.3. Hydraulics diagram
8.4. Main Cylinder Circuit
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8. Hydraulics
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8. Hydraulics
The CEB contains three hydraulic circuits each operating a single actuator
The circuits are arranged in an open-center, series configuration: when no circuits are active, the hydraulic fluid flows freely through the three "open centers" of the valves and returns to the power unit. If a valve is actuated, the fluid flows to that actuator and returns to the power unit.
It is also possible to actuate two valves at the same time (e.g. for Main Cylinder and Secondary Cylinder); in this situation the fluid leaving the Main Cylinder runs "in series" to the Secondary Cylinder circuit, and both pistons move simultaneously.
Overview
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8. Hydraulics
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Overall
There doesn't seem to be an overall relief valve in the system; can we rely on the powercube to have pressure limiting relief? Otherwise pressures could soar when pistons reach end of travel (except at end of drawer advance, where the flow control's internal relief acts). Perhaps use Daman AD05S033S/C manifold with C-10-2 cartridge relief valve.
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8. Hydraulics
Main Cylinder Circuit
The A and B ports of the 4-way valve are routed directly to the bottom and top ports of the cylinder.
Secondary Cylinder Circuit
The secondary cylinder circuit includes a pressure-compensated flow control valve which limits the advance speed of the drawer. When valve port B is pressurized (cylinder advance), fluid flows through the flow control valve to the cylinder at the set flow rate, while excess fluid passes through the check valve and returns to the power unit.
When valve port A is pressurized (cylinder retract), fluid flows directly to the front port of the cylinder. Fluid returns from the back port of the cylinder through the restriction in the flow control valve (not pressure compensated, so higher flow?) to the power unit.
The flow control valve incorporates an internal relief valve which limits the force applied on the advance stroke.
Shaker Motor Circuit
Unlike the cylinder circuits, this is a unidirectional circuit. When valve port A is pressurized, fluid flows through the motor and returns through the needle valve, which sets the flow rate and therefore the rpm of the motor.
Note that, unlike the cylinder circuits, this circuit uses a full-open-center valve which allows the motor to freewheel after the valve is de-energized; this limits pressure surges which might otherwise occur.
The motor case drain port is tee'd into the return line going to valve port B.
Design comments
Shaker Motor Circuit
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9. Electronics
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9. Electronics
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9. Electronics
- Straight Pattern Tin Snips
- Wire Strippers Compatible with 18 and 22 Gauge
- Crimpers
- 2.3mm Flathead Screwdriver
- Screwdriver with Number 2 Philips Bit
- Needlenose Pliers
- Measuring Tape
Tools
Materials
- Case
- [2] Sensor Units
- Solenoid Driver v2
- 18 Gauge Red Wire
- 18 Gauge Black Wire
- Ring Insulated Connector with Small Hole for 10-12 Gauge
- [14] Ring Insulated Connectors for 10-12 Gauge
- [6] Ring Insulated Connectors for 14-16 Gauge
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9. Electronics
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9. Electronics
The basic control principle is that the valve-open time determines the length of cylinder travel. The longer the valve is open, the longer the cylinder travel. This is both for the forward and reverse motions. It is also assumed that fluid flow is constant - or that the Power Cube is at maximum throttle for the lengh of the pressing session.
It should be noted, however, that the rate of cylinder travel will be slightly different in the forward (extension) and reverse (contraction) direction - by design of hydraulic cylinders. This is because one side of the cylinder contains the cylinder rod, which takes up cylinder volume. From a practical perspective, the rod reduces the effective working diameter of the cylinder. For example, our 5" cylinder has a 2.5" rod, or 1/4 the volume of the cylinder. Thus, the cylinder contracts 1.3 times as fast as it extends.
C1 is a large-diameter (5 inch) hydraulic cylinder. C2 is a thin (1.5") cylinder, and therefore, it moves about 10 times faster than C1 for a given hydraulic fluid flow. Therefore, its speed must be limited with a needle valve. Otherwise, timing of this cylinder may produce non-replicable motion. Moreover, this cylinder cannot move so fast that it produces damaging stresses. The practical speed of C2 must be determined in field testing. The faster C2 moves, the more favorable this is for overall rate of brick pressing. Also, the faster C2 moves, the more difficult it is to make it stop at the same location for a given valve-open time.
To control the CEB machine, programmable timing is sufficient to control cylinder motion completely. However, field testing will determine practical limits. If C2 motion is slowed down excessively to allow for complete control, it may be necessary to use limit switches - which allow for replicable stopping position of the cylinder at any cylinder speed. This is not likely to be necessary for C1, but C2 may require a limit switch. For now, we will assume that no limit switches are required, which simplifies hardware requirements for the control scheme.
Control Logic Rationale
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9. Electronics
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Refer to pressing diagram. Define the 'zero position' as the position where all soil or the brick is ejected from the machine. Start by zeroing all positions - ejecting any remaining brick or soil left in the pressing chamber. This action is done irrespective of cylinder positions, assuming they are in the farthest position off zero. This means 3 steps:�
https://github.com/OSE/ceb-controller/tree/v4.0
Get the Control Code Here:
Diagram 6.3: To run the CEB machine, one should turn on the hydraulic power source first. Then, the electronics should be turned on.
On/Off
Control logic involves the zeroing action upon startup at all times. This is done at the beginning of brick pressing:�
The zeroing action also fills the loading drawer with soil, assuming that the hopper is filled with soil.
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9. Electronics
Mount the solenoid driver on top of the Arduino microcontroller.
Using the tin snips, cut 6 pieces of 20cm black wire, 2 pieces of 20cm red wire, 5 pieces of 1.5m black wire, and 1 piece of 1.5m red wire.
Using the wire strippers at 22 gauge, strip half a centimetre at one end of the 6 pieces of 20cm black wire and 1 piece of 20cm red wire.
Using the wire strippers at 18 gauge, strip a centimetre at the other ends of the 6 pieces of 20cm black wire and the 1 piece of 20cm red wire, as well as both ends of the other 1 piece of 20cm red wire, the 5 pieces of 1.5m black wire, and the 1 piece of 1.5m red wire.
Using the crimper, crimp the 10 to 12 gauge ring insulated connector at one of the 1 centimetre stripped ends of the 6 pieces of 20cm black wire, the 2 pieces of 20cm red wire, the 5 pieces of 1.5m black wire, and the 1 piece of 1.5m red wire.
Also crimp the 10 to 12 gauge small hole ring insulated connector at the remaining 1cm end of the 20cm red wire and crimp the 14 to 16 gauge ring connector to the remaining 1cm ends of the 5 pieces of 1.5m black wire and 1 piece of 1.5m red wire.
Using the screwdriver with the number 2 philips bit, connect the small ring end of the 20cm red wire to the remaining power switch terminal.
Insert the large ring end of the 6 1.5m wires through the bottom-middle hole of the lug box.
Using the screwdriver with the number 2 philips bit, connect the large ring end of the 1.5m red wire, the remaining ring end of the switch-connected 20cm red wire, and the ring end of the other 20cm red wire to the bottom-left screw of the terminal platform.
Connect the large ring end of the 5 1.5m black wires and the ring end of 5 20cm black wires to the top 5 screws of the terminal platform. Then connect the ring end of the remaining 20cm black wire to the bottom-right screw of the terminal platform.
Using the flathead screwdriver, connect the half centimetre ends of the 6 pieces of 20cm black wire to the lower terminal of the 5 mosfet terminal blocks, and the left terminal of the power terminal block. Note that the mosfet connections from left to right on the terminal platform should go from bottom to top on the solenoid driver. Also connect the half centimetre end of the 1 piece of 20cm red wire to the right terminal of the power terminal block.
Insert the 2 sensor units by their wire end into the right-bottom hole of the lug box.
Using the flathead screwdriver, connect the bluewhite wires, orange wires, and blue wires into the top, middle, and bottom terminal blocks, respectively, on the right side of the solenoid driver.
Using the screwdriver with the number 2 philips bit, screw-tighten the wire clamp at the right-bottom hole of the lug box.
Steps
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9. Electronics
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Generated 2 paragraphs, single spaced, 10 pt Arial type size, 200 words, 1331 bytes of Lorem Ipsum
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1. Map of Replications - CEB Press - with Bubble Featuring replicators
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Generated 1-2 paragraphs in each column, single spaced, 10 pt Arial type size, 100 words, 669 bytes of Lorem Ipsum
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from zero to maker
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