About this 3D model

Nothing fancy here, just a remix of of my 32mm Tinkeriffic BB Bearing spindle. This one fits snugly in a **40mm** spool. This three-part solution (thirteen parts, if one counts [the 4.5mm BB's](http://rcm-na.amazon-adsystem.com/e/cm?lt1=_blank&bc1=000000&IS2=1&bg1=FFFFFF&fc1=000000&lc1=0000FF&t=zheng3-20&o=1&p=8&l=as4&m=amazon&f=ifr&ref=ss_til&asins=B00419J4X0)) is designed to use a Tinkertoy rod as an axle and is a much, much smoother ride for your 40mm filament spools. I found inserting BB's into the original 608 bearing to be frustrating so I split the bearing in two and left it to the end user to super glue the parts together. The walls of the inner spool are by necessity quite thin; I recommend multiple shells or high infill for that part.