Create an “8 Ball”

Rockler CNC Demonstration #7

2 Sided Project Discussions

Create an “8 Ball”

July 6, 2018

2 Sided General

1. Review bad jig / part
2. Jig Design
   1. Needs to work based on how you plan to flip part to other side
   2. Pin style
      1. Wooden dowel
      2. Steel pins
   3. Absolute zero

In VCarve : Create Design

1. Start new file
   1. Select 2 sided
   2. 3” x 7” x 2.25”

NOTE: For the flip orientation chosen for this Demo, measure width and use actual vs 3”

• 1. Discuss Datum in CENTER
  2. Select Flip direction
  3. Hi Res

1. Create 8 and circle
   1. Text – Ariel Rounded MT Bold
   2. Text Size .5”
   3. Bold
   4. Move to center
   5. Create 1” circle around 8 at the center
   6. Right click and “copy to other side”
2. Go into clipart and select “Dome Dish 90”
   1. Set Size to 2 1/8”
   2. In Properties Set Height to 1.0625”
   3. Right click and “copy to other side”
3. DONE ready to make TOOL PATHS

In VCarve : Create TOOL PATHS

1. Go to Material Set Up
   1. Add 1/16” gap beneath model
   2. Explain
2. “Pocket” toolpath
   1. Set depth to 3/8”
   2. Select 1/8”EM, Edit with pass depth 1/16”, 65% Step over, Feed rate 30
3. “3D Roughing” toolpath
   1. Select ¼” BN, Edit with pass depth 3/32”, 65% Step over, Feed rate 75
   2. Select Model Boundary
      1. Boundary Offset 0.1875”
   3. Machine Allowance 0.04”
   4. Select 3D Raster
   5. Name and calculate
4. “3D Finishing” toolpath
   1. Select 1/4”BN, Edit with pass depth 5/32”, Feed rate 40, step over 9%
   2. Select Model Boundary
   3. Boundary Offset 0.125”
   4. Area Machine Strategy – Offset
   5. Name and calculate

Discuss overall fabrication process

Questions?

Topics for next meeting?