MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
For the largest disc, I used a 1 1/2" (38mm) bit to bore the hole. For the large disc with the smaller hole you can use a 1 1/4" (32 mm) hole and for the small disc you can use a 15/16" (24mm) hole. The hole size is not critical and you can use smaller hole based on preference.