I designed this to be stupid simple and easy to print. I printed in about 4 hours, removed supports in about a minute, and assembled/installed in about 10 seconds.Features: * Low friction - be nice to  your extruder * Small BOM: two bearings (7mm ID, 19mm OD, 6mm width) * Slide-fit assembly * Minimal print time and material - 4 hours at 55mm/s * Customizable, interchangeable parts - swap spool sizes fast * Currently designed to fit a 1Kg spool of Hatchbox 1.75mm PLAInstructions:1. Support touching build platform2. See screenshot for how to orient parts.3. I printed at 55mm/s with 15% infillOriginally, the design was tight at the printer top mating surface (the "+" shape with  a hole through the center), so I've uploaded a slightly modified design with more clearance and recessed fillets to keep the small tabs from breaking on removal.Also, if you purchased a Deltaprintr and want to get it working well, check out my list for improvements (http://deltaprintr.com/forums/index.php?threads/bootstrapping-my-deltaprintr.409/) and Amazon wish list (http://amzn.com/w/26QA5QECPT29E)