Wall Mount Spool Holder with Bearings
Description
A gratuitously over-engineered wall mount spool holder utilizing spare 608zz and 8mm rods and some M3 and M4 screws I had lying around from projects past. The rollers spin when printer pulls filament (at least with heavier or fuller filament spools that I've used so far on this). I read somewhere that spools mounted on the printer frame cause surface artifacts on prints, so I wanted to use my wall. Includes 3 different wall mounts, one open for rod passing through, one closed on the right, one closed on the left. In the photos I have two open hole wall mounts since ducting in the wall results in 8" spaced studs right behind my printer! Includes a 95mm roller for most standard spool sizes, and a 130mm roller for almost any spool size. The photo shows the 130mm rollers. Tiny supports on the bottom inside of the roller gives a cleaner print, but I didn't use supports and bearing still fits nicely. Roller guides are sized for 608zz bearings that also fit snug on the 8mm rods. Note I had two brands of spare 608zz bearings. One brand fits tight, the other snug but not tight. If anybody actually uses this, I suggest testing one roller print first and if too loose or tight for your bearings brand size, just increase or decrease model size by 1 or 2%. Includes roller guides that clamp with M4 screw holes to clamp and to keep the spools in place when the rollers spin. One roller guide stl file is tight, the other over 1.5mm tolerance. (Because I printed these guides with Hatchbox PLA which I quickly learned shrinks significantly compared to the rest which I printed in Prusament PETG. I had to use the large guides for my rollers). Includes little 8mm circular clamps with M3 screw holes to hold the 8mm rods in place. Not necessarily required since things fit pretty snug, but useful on the ends of rods to keep spare spools from sliding off. I probably used about 50% infill on wall mounts, and 75% on rollers. Small parts 100% to make the screw threads reusable. Feel free to remix and improve this. The parts were mostly created in Tinkercad so I have no useful source files to share. The rollers were created in Fusion 360 to get higher resolution smoother roundness, then edited in Tinkercad I think (I did this a week ago and can't remember!).
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