First, I’d like to thank @Gero and everyone who helped me learn this, in addition to this Tutorial. I thought I’d write it up with some screen shots to help anyone else learn without as much Q&A. This is a simple example of a small wheel. You can make it a bit more complex as in the Tutorial if you want, but it helps to go through once with a simple object before trying more complex creations.
Part 1: Create the Sketch
Step 1: Open FreeCAD, create a new document, and save it.
Step 2: Open the Sketcher Workbench and create a new Sketch.
Step 3: Choose XY plane.
Step 4: Draw a circle the same or larger diameter as the bit you’ll be using to test this, and then a larger circle to make a wheel shape.
If you zoom in you can be very precise!
Part 2: Give it a 3rd dimension
Step 5: Go to Part Design workbench.
Step 6: Create the body. Click the sketch and click create body, or create a body and drag&drop the sketch into it.
Step 7: Add the pad, click reversed so it will be below 0 point on Zaxis.
I use 20mm for thickness, because that will cut 1mm beyond a 3/4 inch thick piece of plywood.
Step 8: Go to Isometric view so you can see the pad
Part 3: Create the GCode
Step 9: Go to the Path Workbench
Step 10: Create a Job
Step 11: Add a Tool or select one from the Tool Manager
Step 12: Define how fast the motors will move when cutting.
I like to use 42 mm/s.
Step 13: In the SetupSheet, define how fast the motors will move when NOT cutting.
I like to use 100 mm/s.