SummaryPrinted Hinge uses 1.75mm Filament as hinge pin. Nice strong design with rounded corners. Smooth operation. Has a couple of kerf parameters in the Open SCAD files to adjust the fit, based on how full your printer is printing. This hinge is part of an add-on enclosure for a Lulzbot Mini 3D printer. The other parts are up online, and the entire enclosure is available at: http://drazzticaction.com/products-page-2/3dprinters/lulzbot-acrylic-enclosure/ or An updated improved version with some improved features is in thing:((http://www.thingiverse.com/thing:882996) Enjoy, Jim Rasmussen TabSynth Design Works InstructionsPrinted with standard settings. And it works just fine. Requires 4 M3 machine screws, and four nuts, per hinge. Print out the M3 plastic stress relieving washers to use with acrylic doors.