Cardboard Fastener (threaded)

thingiverse

This is a "screw" used for fastening cardboard together. Shown with thing:1034229, a single-print hinge. It may or may not be compatible with the Makedo "Scru" ecosystem, I've never seen a scru (or other makedo product) in person for comparison. It does work with thingiverse creations like a tool to drive them, a hinge and some brackets. I had hoped that the knurled version would be feasible to drive without the "wrench" part, but it was disappointing in that respect. I kept the design anyway, but you'll probably want to print the non-knurled version and drive it with thing:974158. Print Settings Printer: MP Select Mini Rafts: No Supports: No Resolution: .300 Infill: 30% Notes: Print so that the head of the screw touches the bed of the printer. The screw will work despite some droopy overhangs. How I Designed This I used spring_melt's part as a reference for sizes, but designed a fresh part from scratch in openscad, then tweaked it until it worked better.