Rotatable Box

prusaprinters

<p>A rotatable box that looks similar to the classic woodworking “impossible” dovetail but is opened via rotation instead of sliding, allowing the box to have a much larger internal cavity (over 1500 cc) that can be used to hold gifts, etc. &nbsp;This model also includes an optional locking mechanism utilizing ¼" diameter by 1/16" thick neodymium disc magnets and 7/16" diameter ball bearings.</p><p>This looks best when the two parts are printed in different colors. &nbsp;The holes for the locking mechanism magnets are sized to press fit ¼" diameter by 1/16" thick magnets. &nbsp;If the magnets are loose just use a little cyanoacrylate glue. &nbsp;Smaller diameter (6 mm) magnets can also be used by gluing. &nbsp;The holes for the locking bearings are sized for 7/16" diameter but smaller (10 mm) bearings should also work. &nbsp;You only need one bearing and two magnets but the model has holes for up to four bearings and eight magnets.</p><p>Locking mechanism works best by holding the model in one hand and bumping it into the palm of your other hand. &nbsp;Hold one side up to lock, the opposite side up to unlock.</p><p>No supports necessary. &nbsp;Clearances are fairly tight so your X and Y dimensions need to be reasonably similar. &nbsp;Fit seemed about right when printed on my Prusa i3 MK3S. &nbsp;I used PLA but PETG and other materials would probably also work. &nbsp;Design comes from the January, 2010, Inventor NG World Cup challenge, idea by T. Hutterer.</p>