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Rhino Tutorial: Booleans, Control Points, Blending

Approx Completion Time: 30 min
Goal: Learn boolean operations, how to manipulate control points, and the power of blending

What you will draw: The Happy Bishop Chess Piece!

Video Support:

Steps 1-14

Steps 15-32

Steps 33-finish

Mac Setup Instructions

Windows Setup Instructions

Open Rhino and click Show Templates on the right

Open Rhino and click the New Tab at the top

Scroll down in the template menu and choose

Small Objects - Inches

Scroll down in the template menu and choose Small Objects - Inches

Let’s turn on a modeling aid.

Now you will see some information next to your cursor as you use most tools.

From the menu at the top, choose:

FILE > PROPERTIES

Under modeling aids select Cursor Tool Tips

Check the boxes above and click OK.

Osnap    Distance   Point

Set Grid File > settings

Set Grid File > Properties

Start in PERSPECTIVE view.

Double click the word PERSPECTIVE to focus on that viewport.

Turn Grid Snap on but other options off:

Start Tutorial

STEP 1: Start with a Cylinder

Draw your cylinder from 0 and set the radius at 2.0 and the end of cylinder at 0.5.

STEP 2:

Set the view to shaded

STEP 3:

Circle Choose:

Make sure the following Osnap is turned on:

Use the outside edge of the top of the solid to find the center of the surface.  Draw a circle with radius 1.75.

Make sure you are finding the center of the TOP and NOT the bottom of the solid.

STEP 4: Select the curve (circle) and type PlanarSrf and ENTER

STEP 5: Select the curve and delete it so you are left with only the surface and original solid.

STEP 6: Select and Copy the Surface:

  1. Select the Surface and Type copy
  2. Move the cursor to the edge of the surface (like in step 3) to copy from the center.
  3. Enter: 0,0,0.75 in the command line
    4. Press
    ENTER to set new location

5. Press ENTER again or ESC to exit copy tool

STEP 7: Blend

  1. Type BlendSrf in the command line
  2. Select the surface touching the cylinder then
  3. Select the surface floating above the cylinder and press ENTER
  4. Set your blend settings as shown below:

and click OK.

STEP 8: Select the Top Surface:

  1. Type copy
  2. Move the cursor to the edge of the surface (like in step 3) to copy from the center.
  3. Enter: 0,0,1.25 in the command line
    4. Press
    ENTER to set new location

5. Press ENTER again or ESC to exit copy tool

Step 9: Turn on the Gumball and resize the shape.

Select the floating surface

SHIFT + Click on the Green or Red Gumball Resize Box

Type 0.8 (which will size to 80% the original size) and ENTER

NOTE: The shift key allows for a 2D resize (vs a 1D resize)

STEP 10: Blend

  1. Type BlendSrf in the command line
  2. Select the surface edge directly below the floating surface

make sure arrows are pointing outward.

  1. Select the floating surface edge and press ENTER
  2. Set your blend settings as shown below:

and click OK.

If your shape does not look similar to the shape above: CMD+Z (CTRL + Z) and redo step.

STEP 11:

  1. Select the circular surface on top of your shape and type copy.
  2. Move the cursor to the edge of the surface (like in step 3) to copy from the center.
  3. Enter: 0,0,2 in the command line and Press ENTER to set new location
  4. Press ENTER again or ESC to exit copy tool

STEP 12:

Select the floating surface

SHIFT + Click on the Green or Red Gumball Resize Box

Type 0.6 (which will size to 60% the original size) and ENTER

STEP 13: Blend

  1. Type BlendSrf in the command line
  2. Select the surface edge directly below the floating surface

make sure arrows are pointing downward.

  1. Select the floating surface edge and press ENTER
  2. Set your blend settings as shown below:

Suggested Mac Settings:

Suggested Windows Settings:

and press OK.

STEP 14:

Select the center surface as shown below
Option click on the blue gumball arrow and type 3 to create a copy to the top surface.

Press CMD+SHIFT+E  ( Windows: CTRL+SHIFT+E)

STEP 15:

Shift click on the red or green resize box and type 0.8 to resize the top surface to 80%

STEP 16: Loft

  1. Type Loft
  2. Select the two surfaces shown below

3. press ENTER THREE TIMES to set loft.

STEP 17:

Select the topmost surface

SHIFT + Click on the Green or Red Gumball Resize Box

Type 1.5 (which will size to 150% the original size) and ENTER

 

STEP 18:
Option click (windows: alt click) on the blue gumball arrow and

type 0.2 to create a copy to the top surface.

STEP 19: Blend

  1. Type BlendSrf in the command line
  2. Select the surface edge directly below the floating surface
  1. Select the floating surface edge and press ENTER
  2. Set your blend settings as shown below:

STEP 20:

Option click (windows: alt click) on the blue gumball arrow and type 0.4 to copy the top surface.

STEP 21:

Shift click on the red or green resize box and type 0.6 to resize the top surface to 60%

STEP 22: Loft

  1. Type Loft
  2. Select the two surfaces shown below

3. press ENTER THREE TIMES to set loft.

STEP 23:

Set workspace to

Choose:

Draw Sphere from (0)  with a radius = 1.2

STEP 24:

Using the gumball, move the sphere 6.5 up

(it doesn’t matter what color the arrow is as long as it’s pointing up)

STEP 25: Layers

In your layers panel rename the layer you’ve been working on to “body”

and rename a different layer “hat”

Turn off the body layer and work on the hat layer.

STEP 26:

Set workspace to

Choose:

Draw Sphere from (0)  with a radius = 1.2

STEP 27:

Set workspace to

Select the sphere and type : PointsOn

Select the top center control point and, with the gumball, move it up 1”

STEP 28:

Type : PointsOff

STEP 29:

Using the gumball, move the hat 7.5” up

(it doesn’t matter what color the arrow is as long as it’s pointing up)

STEP 30:

Choose:

Switch to FRONT or RIGHT view.

Draw Sphere from the grid point just above the hat  with a radius = 0.4

(you may need to have grid snap checked)

STEP 31:

Select the sphere you just created. Use the gumball to shorten the height. Click inside whatever resize box is at the bottom of the sphere and type 0.6. Move the shape down slightly if need be.

STEP 32:   Join the hat shapes permanently using boolean:

Choose: Boolean Union

Select the two shapes and press enter to set union.

Unhide the body layer:

STEP 33: The Face

Select the “body” layer and set workspace to FRONT.

Make sure Grid Snap is on.

Choose:

Using the Arc, draw a smile (or a frown!) on your bishop.

Choose:

Using a radius of 0.25, draw two eyes on your bishop.

STEP 34:  Type pipe

  1. Select the mouth. Set the start radius at 0.2 and End caps to ROUND and press ENTER

2. Set the end radius at 0.2.

Press ENTER TWICE to set the pipe.

STEP 35:

While still in FRONT view select the

eyes and the mouth.
Without deselecting,
switch to right view.

Turn off Grid Snap

Using the gumball, move the features so that they are partially outside the head

STEP 36:

Switch to front view. Choose:

Object to subtract from: Select the head and press ENTER.

Polysurfaces to subtract with: Select the eyes and mouth and press ENTER.

STEP 37: Switch toview.

If the hat intersects the eyes, feel free to move it up slightly. If the boolean operation does not work as shown: undo step 36, move the face slightly more into the face, and try again.

STEP 38: Your turn!

If you select your entire object, right-click (ctrl click) and choose “Object Materials”,

you can make your chess piece look like it was carved from some material.

(you must be in rendered mode)

Windows: Check Properties Panel at Right:

Extra Time:

  1. Can you figure out how to add this cutaway that most chess bishops have?

2. Make a companion pawn (or other chess pieces) to go with the bishop!

You’ve completed this tutorial!!!

(You will have two more shapes)

Save the completed file as HappyBishopYourName.3dm

TURN IN screenshot AND 3D file