Cardboard fold roller

prusaprinters

<h4><strong>What is it for ?&nbsp;</strong></h4><p>I designed this fold roller (I know it looks like a pizza cutter ^^) to make clean folds on cardboards.</p><h4>Hardware needed :</h4><p>I used a section of brass cylinder (external diameter : 5mm, internal diameter : ~4mm) to act as a bearing and prevent the wheel to wear out too fast on the screw.</p><p>Designed for M4 nuts and screws (it requires 3 of each), I used a nilock nut on the wheel to be able to lock it without tightening it too much. It allows the wheel to roll freely.</p><h4>Printing:</h4><p>I printed it with PETG for longevity but I guess it should work fine with PLA<br>Printed with a 0.3mm layer height without supports.</p><p>No post processing needed except fastening the 3 parts together with nuts and screws.</p><h4>Tips :&nbsp;</h4><p>When using it in the same direction as the cardboard 'grooves' don't press it too hard or it could cut into the cardboard. After a few tests I realised you don't have to press it really hard in any direction to make a proper fold, even on thick cardboard.</p><p>Let me know how it works for you :)</p>