Removable Spool Holder for 2020 Misumi Aluminum Extrusion

thingiverse

UPDATE 11/29/16: I've been using this thing for nearly a year now, and it's held up great! Ever since I built Jasonatepaint's awesome Aluminum Extrusion Ultimaker 2 a couple of months back, I've been using a Irwin quick-grip clamp on my desk as a spool holder... Not exactly elegant. I finally decided to actual fix this issue, so I popped open Thingiverse and started looking for 2020 extrusion spool holders. However, since part of what I love about this printer is it's portability and relatively compact nature, I didn't want an 80mm long cylinder bolted onto the rear that wouldn't be easy to remove when transporting it. I decided to design my own spool holder, and do away with any sort of bolts/permanent mounting entirely and just let gravity do the work. The result is an incredibly sturdy, yet very easy to remove spool holder that should work on just about any 2020 extrusion. It can fit rolls with at least a 30mm inner spool diameter, with a maximum width of up to 78ish mm. The small, mushroom-esque piece is to lock the spool onto the holder, and just drops in to the main spool holder shaft. I've included the .ipt files along with the .stl's, so if there's something you want to improve, please do so! Alternatively, if you don't have Inventor, let me know in the comments what your suggestions are and I'll update the files. Print Settings Supports: No Infill: 20% Notes: There are two primary things to make note of with regards to print settings: 1: Use a decently high infill percentage. I used 25% (as I do for most "structural" things) and it's plenty strong. 2: More importantly, print this thing laying on it's side as shown in the second picture. This will make sure that the highest strength of the part is in the orientation that the greatest force (weight of the spool) will be directed in.