I just finished an updated version that will fit more easily within the cut window.
I also added two additional screw holes to the guide tabs that will offset the centerline of the fixture forward or backward a 1/4 inch from the focal point. This will help to handle slightly larger objects. When attaching the guide tabs, ensure orientation is such that the screw is at the top of the tab. To shift the fixture forward for larger items, orient the tab such that the the two offset holes are at the top, and place the screw through the hole closest to the back of the machine.
You will need to modify the width of the slots in the positioning guides to match the rolling diameter of your object, using the formula in the design file.
