prusa i3 spool support cylinder for M8 like Anet A8

thingiverse

I had to lengthen it because my original spool was too short for my 1kg PLY and ABS spools, so I made it longer. It is narrower than the inner diameter of the spool and roughly 18mm longer than its width. However, it glides exceptionally well on an 8mm threaded rod as if it were a standard part of the Anet A8 Prusa i3 or OMNI spool holder from Hesine M-505, also known as M 505. In fact, there's no need for bearings because it spins almost as smoothly as one with bearings. The original spool support cylinder can be found at http://www.thingiverse.com/thing:1305934. Edit: This spool fits perfectly into the 52mm inner hole of RepRapper 1kg spools, which have exactly the right diameter. On the other hand, 1kg spools from "renkforce" (Conrad), "velleman," and many others have larger center holes, which is no problem at all. The only spool in my collection that doesn't fit is the one included with my CTC Prusa i3 Pro B from an unknown manufacturer. Incidentally, "Windows 3D Builder" is a great tool for finding and repairing faulty ".stl" files (from other users, for example) and cutting or rearranging models.