"Impossible" Bolt and Nut Puzzle Illusion (Machinist's Trick)

thingiverse

Unlike others ive seen, the nut is free to move along the length of the rod. If you make one, please upload a make. I would love to see how yours turn out. Remixed from "NUT JOB" countersunk bolt and the nut is not modified, but ill upload it for the convenience. 1.) Print both bolt and nut at the same time. 2.) When the thread is about halfway done, pause the print, and take the nut and thread it on. Resume the print. OR 1.) Print only the nut 2.) Print only the bolt, pause the print halfway, then thread the nut on, then resume. This allows the nut to be a different color. Its not really an illusion, the nut is truly trapped on the bolt. It is impossible to remove.