D3D CNC Circuit Mill - Workshop Prep

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July - 6-8

Risks:

1. Biggest risk - not getting the proper resolution calibrated.
2. Dial indicators - get some more.
3. Checklist:
1. Screws tight
2. Belts tensioned
3. Parts aren’t slipping on axes
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• Design Documentation
• Z Motion - springs - Post about it
• Overview of Toolchain
• Bed Leveling Procedure -
• Motion + Spindle
• Marlin Firmware
• Copper Carve Tollchain

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Copper Carve Source�https://github.com/ShaneOberloier/gcode_leveler

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https://help.github.com/articles/cloning-a-repository/ (How to Clone)

http://opencircuitinstitute.org/content/configure-circuit-mill-development-log-spindle-dropping-auto-probing-and-z-axis-failure-mode

July - 6-8

Power Meter afterwards. Pictures: Sarah

Hello

• Sample Text

36 oz in motors are sufficient

(small form factor)

X = 20 cm = 7.9”

Y=12 cm = 4.7”

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What screws

Bed Leveling Procedure

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Copper Carve

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1. Connect Alligator Clamp from RAMPS Pin X to Cutting tool
2. Connect Alligator clamp from RAMPS Pin Y to Copper clad fiberglass
3. Jog tool to desired (0,0,0) and Set Zero machine (Machine Control tab)
1. Move in x and y by eye
2. Move down in z, will stop automatically (connected to endstop) when it hits board
4. Enter Size X and Size Y in mm - must be equal to or larger than your designed board size
5. Select the amount of probing points for each axis - more points will increase the accuracy of compensation. Use at least 5x5 for 4”x3” board
6. Click Start Probe
• This probes the 25 points by itself
• Leveling file is generated

Running Procedure (Doing a Real Cut)

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• At this time, we have obtained a calibration file. At end of probing it stops where it finished calibration
• Verify measurement of Z - make sure you stop at z=0
• Typical depth of cut is 0.1mm. Accuracy should be 0.01
• Marlin (wiki):
• Software endstops are disabled in Marlin
• Minimum segment length - configuration_adv.h
1. Global for all movement
• Jerk and acceleration - increased to high - didn’t work

Now:

1. Generate Gcode in FlatCAM -
2. KiCAD - generate Gerber File - sample file
1. Front layer - cutting path
2. Edge.cut layer (1 mm endmill)
3. Drill File
3. To generate in KiCAD, go to File-Plot
4. From 3 Gerbers, go to FlatCAM. Generate the 3 miles
• 50 mm speed, .1 mm depth, 0.1 mm depth
• Drill - do if 1 mm and above
• 50 mm speed, 1 mm cylindrical endmill
• Or do edge in FlatCAM - board cutout. .15 mm left at end

From Circuit to Holes

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• Zero the z when you start with a new bit
• Use same probing data
• Normally:
• 0.1 mill
• Drilling
• Mill out >1mm holes
• Finally cut out cont
• Save steps - just use the size of the board
• Save mill bits - just copper should be milled - .

Copper Carve Manual Control Screen (QT)

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• Set Zero tells machine you’re at 0,0
• 0,0,0 is your declared position with bit hitting the
• What actually happens is a G code command G92 X0 Y0 Z0

Move to 0,0

//Set the current location to (0,0,0)

SendGCode(SetPosition + " X0 Y0 Z0");

//Reset All backlash tracking variables.

PosX = 0; //Tracking position of X motors

PosY = 0; //Tracking position of Y motors

PosZ = 0; //Tracking position of Z motors

DeltaX = 0;

DeltaY = 0;

DeltaZ = 0;

Wiring Diagram

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Sindle to Digital 9

M106 is inserted by Copper Carve

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RAMPS

X

Driver

Y Driver

X Driver

Y Driver

Z Driver

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Power Suply

Screw Down

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48V adjustable supply

Relay signal

Probe is 2 pin

Header connection

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http://a.co/1wG9rXX