Gear Coasters for CNC

I wanted to mill the coasters from [thing:7796](http://thingiverse.com/thing:7796) on my CNC but the design assumes a laser and isn't appropriate for the thicker kerf of a CNC cut. I split out the pieces so they can be milled more easily. The included DXF file is for one coaster, make four or more for a set.

You may need to edit the size of the little tabs. The length should be equal to 4x the thickness of your material if you are making a set of four. The width should be equal to the th