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DT Rhino Tutorial - Booleans, Control Points, Joining and Blending (Chess Piece)
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Rhino Tutorial: Booleans, Control Points, Blending (Chess Piece)

Approx Completion Time: 60 min
Goal: Learn boolean operations, how to manipulate control points, and the power of blending

What you will draw: The Bishop Chess Piece!

Video Support:

Steps 1-10

Steps 11-33

Mac Setup Instructions

Windows Setup Instructions

Open Rhino and click Show Templates on the right (OR go to File>New using template)

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 from 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:

  1. Circle Choose:

  1. Make sure the Center Osnap is turned on

Osnap menu is on left (Mac)   or the bottom(Windows)

  1. Use the outside edge of the top of the cylinder to find the center of the surface. When you see the “center” tooltip pop up click and the circle will start from the center. 
  2. Draw a circle with radius 1.75.
  3. 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

The lines across the center indicate a surface.

We need this to be a flat plane so we can blend it later!

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 you just made and Type copy
  2. Move the cursor to the edge of the surface (like in step 3) to copy from the center 
    and
    click the mouse.

*If you have trouble with this, you can also type the coordinates of 0,0,0.5 and press enter

  1. Enter the “Point to copy to” : 0,0,0.75 and press enter or done

D. Press ENTER again or ESC to exit copy tool

STEP 7: Blend

  1. Type the BlendSrf command
  2. Select the surface touching the cylinder (1) then
  3. Select the surface floating above the cylinder (2) and press ENTER
  4. Set your blend settings as shown below (you probably don’t have the change anything)

and click OK.

The top surface is not blended with the bottom surface using a curvature function.

STEP 8:

  1. Click to select the top surface of your shape

  1. Type copy command
  2. Move the cursor to the edge of the surface and click (like in step 3) to copy from the center.

(if you have trouble you can select the circle and copy from 0,0,0.75)

  1. Type: 0,0,1.25 for the “point to copy to” and press ENTER

E. Press ENTER again or ESC to exit copy tool

Step 9: Turn on the Gumball so we can resize the shape.

*gumball is at the bottom of the screen on Windows

  1. Select the floating surface
  2. Hold down the SHIFT KEY on your keyboard
  3. Click on the Green or Red Gumball Resize Box
  4. Type 0.8 (which will size to 80% the original size) and ENTER

NOTE: The SHIFT key allows for a resize in both x and y dimensions

Look at the shape from the top:

Correct!

NOT correct. Shift key was not used.

Go to edit>undo and try again.

STEP 10: Blend

  1. Type the BlendSrf command
  2. Select the first edge: the surface directly below the floating surface

make sure arrows are pointing outward.

  1. Select the second edge: click on the floating surface 
  2. You do not need to “Drag the seam point” just press ENTER
  3. Set your blend settings as shown below:

  1. and click OK.

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

STEP 11:

  1. Select the circular surface on top of your shape and type the copy command
  2. Point to copy from: Move the cursor to the edge of the surface and click (like in step 3 and 8) to copy from the center.
  3. Point to copy to: 0,0,2 in the command and press ENTER to set new location
  4. Press ENTER again or ESC to exit copy tool

STEP 12:

  1. Select the floating surface
  2. Hold down the SHIFT KEY on your keyboard
  3. Click on the Green or Red Gumball Resize Box
  4. Type 0.6 (which will size to 60% the original size) and ENTER

NOTE: The SHIFT key allows for a resize in both x and y dimensions

   

STEP 13:

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

make sure arrows are pointing downward.

  1. Select the second edge: click on the floating surface edge
  2. You do not need to “Drag the seam point” just press ENTER
  3. Set your blend settings as shown below
  4. and press OK.

Suggested Mac Settings:

Suggested Windows Settings:

STEP 14: Another way to copy

  1. Select the center surface as shown below
  2. HOLD down the Option Key (ALT on Windows) and click on the blue gumball arrow
  3. type 3 to create a copy to the top surface that is 3 inches above the original
  4. Press CMD+SHIFT+E  ( Windows: CTRL+SHIFT+E) to fit to screen.

STEP 15:

  1. Select the floating surface
  2. Hold down the SHIFT KEY on your keyboard
  3. Click on the Green or Red Gumball Resize Box
  4. Type 0.8 (which will size to 80% the original size) and ENTER

NOTE: The SHIFT key allows for a resize in both x and y dimensions

STEP 16: Loft

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

 

C. Ignore the options by pressing ENTER three times to apply the loft.

STEP 17:

  1. Select the topmost surface
  2. HOLD the SHIFT Key + Click on the Green or Red Gumball Resize Box
  3. Type 1.5 (which will size to 150% the original size) and ENTER

 

STEP 18:
A. Hold the
OPTION key and click (windows: ALT click) on the blue gumball arrow

B. type 0.2 and press ENTER to create a copy to the top surface.

STEP 19: Blend

  1. Type BlendSrf command
  2. Select the first edge: Select the surface edge directly below the floating surface
  1. Select the second edge: Select the floating surface edge
  2. You do not need to “Drag the seam point” just press ENTER
  3. Set your blend settings as shown below:

STEP 20:

A. Hold the OPTION key and click (windows: ALT click) on the blue gumball arrow

B. type 0.4 and press ENTER to create a copy to the top surface.

 

STEP 21:

  1. Select the floating surface
  2. Hold down the SHIFT KEY on your keyboard
  3. Click on the Green or Red Gumball Resize Box
  4. Type 0.6 (which will size to 60% the original size) and ENTER

NOTE: The SHIFT key allows for a resize in both x and y dimensions

 

STEP 22: Loft

  1. Type Loft
  2. Select the two surfaces shown below (order doesn’t matter)
  3. C. Ignore the options by pressing ENTER three times to apply the loft.

STEP 23:

Set workspace to

Type the Sphere command

For the parameters = Center of Sphere: 0 and Enter         Radius = 1.2 and Enter

STEP 24:

  1. Click on the sphere so that you can see the gumball.
  2. Click one time on the arrow that is pointing up

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

  1. Type 6.5 in the dialog and press enter.

 

STEP 25: Layers

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

and rename a different layer “hat”

  1. Turn off the body layer (by clicking on the lightbulb)

and highlight the blue radial button on the hat layer. (checkmark on Windows)

STEP 26:

  1. Set workspace to
  2. Type the Sphere command

C. For the parameters = Center of Sphere: 0 and Enter         Radius = 1.2 and Enter

It should be red as the hat layer’s color is red.

STEP 27:

  1. Set workspace to
  1. Select the sphere and type : PointsOn to turn on the shapes control points.

  1. Click the top center control point
  2. Click the up-pointing arrow and 

type 1 then press enter

STEP 28:

Type : PointsOff and Enter to turn off the control points

 

STEP 29:

  1. Click on the red shape so that you can see the gumball.
  2. Click one time on the arrow that is pointing up 
  3. (it doesn’t matter what color the arrow is as long as it’s pointing up)
  4. Type 7.5 in the dialog and press enter.
  5. Click on the lightbulb on the body layer so you can see the whole drawing so far.

 

STEP 30:

  1. Type the Sphere command
  2. Switch to FRONT or RIGHT view (they are currently the same)
  3. See if you have grid snap checked
  4. Click to Draw Sphere from the grid point just above the hat  with a radius = 0.4

STEP 31:

  1. Select the sphere you just created so you can use the gumball to shorten the height.
  2. Click inside whatever resize box is at the bottom of the sphere
  3. type 0.6 and Enter
  4. Move the shape down slightly if need be.

NOTE: Because we didn’t use the shift key, the scaling is only in one dimension,

which is what we want!

STEP 32:   Join the hat shapes permanently using boolean:

  1. Choose or Type : Boolean Union

  1. Select the two shapes, one right after the other, then press enter to set union.

They are now one permanently joined solid. If we didn’t want to permanently join them we would use “group” (not boolean union).

STEP 33: Add a texture

You can make your chess piece look like it was carved from a real material.

  1. Select your entire object then right-click (ctrl click) and choose “Object Materials”
  2. This will open a panel on the left.

     

 Windows users:

Look for the properties panel on the left and select the paint tube icon.

And choose:

  1. Click on the plus sign in this panel and select “Import from Material Library”(Mac only)

  1. You can choose any material you want. In this example, we’ll choose “Cherry Polished” which is inside the “Wood” folder.

  1. While all of your chess piece is selected, right click on the material and choose the option: Assign to Objects. (On windows just click on the Cherry Polished Material and it will apply to anything selected)

   

  1. Change to Rendered view.

   

You’ve completed the required portion of this tutorial!!!

Save the completed file as HappyBishopYourName.3dm

TURN IN screenshot AND 3D file as specified by your instructor.

Everything below is for folks with extra time

Extra Time Addition 1: The Face

Step 1a:

A.It is recommended that you NOT be in rendered mode when drawing.

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

C. Make sure Grid Snap is on.

D. Choose:

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

F. Choose:

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

STEP 2a:  A. Type pipe

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

C. Set the end radius at 0.2.

Press ENTER TWICE to set the pipe.

STEP 3a:

  1. While still in FRONT view select the

eyes and the mouth.


B. Without deselecting,
switch to RIGHT view.

C. Turn off Grid Snap

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

E. Click off the features to deselect.

STEP 4a:

  1. Switch to front view. Choose or type:

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

  1. Polysurfaces to subtract with: Select the eyes and mouth, make sure to check:

  1. And press ENTER.

STEP 5a: 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 4a, move the face slightly more back into the head, and try again.

Extra Time Addition 2:

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

Extra Time Addition 3:

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

Extra Time Addition 4:

Draw a chess board for the piece(s) to be on: