Simple spool holder

prusaprinters

<p>I have slatwall behind my 3D printers, so use that to hang everything from. Filament, tools, etc. For simplicity's sake, I took a standard 8" hook and cut off the curved tip. Then I attached a 12" ¼-20 threaded rod using two small hose clamps. I covered the clamps and hook in heavy-duty shrink-wrap - not necessary, but looks nicer. This resulted in a threaded rod sticking out perpendicular to the wall. I wanted a slight upwards angle, so I attached some foam padding to the slatwall base on the hook.</p><p>Then I used a pair of ¼-20 nuts to adjust the depth where the spool would touch. Two nuts so they would lock in place. Same on the other side.</p><p>The spool has three parts - makes printing easy and no supports needed. Standard bearings press in to either end of the shaft. I prefer “fidget spinner bearings” because they spin much more freely than skate bearings. Standard 8x22x7mm.</p><p>The shaft has small lip - the large disc drops onto this. Depending on your printer tolerance it's a snug fit or may have to be glued. The end cap threads in place. It's a simple design but it works with any spool. I've been using it for over a year and have improved and simplified the design a few times.</p><p>The spool should have room on the holder so it can spin freely. The holder is close to the printer to prevent the spool from unwinding on it's own.</p><p>Note: My previous version had a left-hand thread. This one has a right-hand thread. I was playing around with ideas.</p>