Updated Spool hub for Polymaker cardboard spools

prusaprinters

<p>NEW model, the second version has a bit more grab to prevent it from coming loose. It needs to be printed with supports but they are tiny and only take a second to remove.&nbsp;</p><p>Instead of “pushing” into the spool, place it over the hole and give it a good whack as this will seat it better.</p><p>&nbsp;</p><p>I love Polymaker filament and I love that they went to cardboard spools but I noticed it was a bit harder for the machine to pull out the filament as cardboard on plastic has a lot more friction that plastic on on plastic. I saw someone had created a hub to fix this but it was large (went all the way through the spool meeting in the middle) and I decided to make a simple design that could be quickly printed at little cost.</p><p>My design has small protrusions around the edge (second photo) that allows the hub to be pushed on but hold tight.</p><p>I made these for my Polymaker filament so I am not sure if it will fit other brands or not. Feel free to make and share but please no commercial use.</p>