Having got a 3rd different centre-hole-sized filament reel this week, I decided to create a simple quick-change holder for my Lulzbot AO-101. This part is the key base sections that is held in place by the original AO-101 filament holder bolt. Its radius matched the bolt head so the bolt also acts as an extension to the tube's length. (The white coned part is the original 50+mm reel holder I was using before) Links to the other sections here: 50+mm reel holder: http://www.thingiverse.com/thing:172269 73+mm reel holder: http://www.thingiverse.com/thing:172271 31+mm reel holder: http://www.thingiverse.com/thing:172273 Printed on my Lulzbot AO-101 modified to go up to 160mm. pt5 nzl using slic3r, pt25 layers & custom perimeter extrusion width pt49mm