I made a polargraph and documented the process on this blog.
All of the fabricated parts are made from acrylic and cut with a laser. These are the files for 1/4" and 1/8" pieces. i drew them all in Rhino and made a Adobe Illustrator and Auto Cad file of each.
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Step 1: Quarter Inch
Here are the files for the quarter inch pieces. I was using an Epilog Zing that had a 12' x 16" bed hence the orientation. There is a Rhino file and also a Adobe Illustrator and Auto CAD file too.
Step 2: Eighth Inch
And the files for the eighth inch acrylic too.