T-Slot HexNut Holder

prusaprinters

<p>After one too many session opening the base of my Thing-o-Matic and having the hex nuts fall out of the t-slots, I decided to do something about it. This design should hold the M3 hex nuts firmly in a t-slot, while still making them easy to remove if possible. The <i>bottom</i> of the holder also serves to spread the force from the nut to reduce potential damaging effects of compression on the wood.</p><p>Because the object is small and the tolerances are pretty tight, the printing can be a little finicky. The included OpenSCAD model contains commented parameters that should make adjusting the object pretty easy.</p><p>I have only printed this in ABS. It is very important that you print the holder with an infill of 100%. Otherwise the bottom layer tends not to be solid.</p><p>I've had good luck printing with a thickness of 0.2mm and a width/thickness of 2.</p><h3>Instructions</h3><ol><li>Print a holder</li><li>Insert an M3 hex nut into the hole with flats parallel to the long sides.</li><li>Insert the holder into a t-slot with the bottom between the nut and the incoming screw.</li><li>Tighten the screw.</li></ol><p>Category: Other</p>