Tinkeriffic BB-Bearing 52mm Spool Spindle

**There's a Zheng3 Kickstarter in the works**, so the printers have been furiously extruding protoypes since Christmas; sharp-eyed readers will note that [zheng3.com](http://www.zheng3.com) has been largely silent since Santa shimmied down the chimney. We're going through filament like poop through a goose over here.

Ever on a shoestring, we try to keep costs down as much as possible, which means going hither and yon to find filament. At this stage in the hobbyist 3d printing game it's premat