I designed this thing so that I can use my dear old Minicraft in the Dremel work stand. The Minicraft has a very good chuck that takes 5 mm drills, it also has a very good precision. To use this nut you need to remove the original nut on the work stand for the Dremel tools. You do this by removing the cover over the nut. The cover is glued in place so be careful, no big deal if the cover breakes it only serves the purpose not to lose the nut. You need to unscrew the grey plastic piece on the Minicraft as shown in the picture. The threads are delicate on the Minicraft so you need to print the new nut in high quality, printing with PLA or ABS works equally fine.