2020 Aluminum Extrusion Frame Corner

thingiverse

A strong corner piece for building frames out of 2020 Aluminum extrusion. Each of the three pieces joined together by the part are contacted by three screws each in a triangular pattern. The part fits into the extrusion's slot for a tight secure fit. The screw holes are for M4 screws with hex socket head caps, there is a 2mm counter sink on each holes. One of the screw holes is for an M6, the hole on the end of the extrusion must be tapped for this. General Specs: Print at 40% for Strength, PLA is fine Layer height at 0.2mm for screw hole/countersink accuracy M4 Metric Screws with 2mm Countersink Channel slots for tight and square fit M6 Metric screw for extrusion end tapped hole Each Aluminum piece is contacted by three screws in a triangular patter for max rigidity UPDATE 1: I have added two additional models, one is the same part but the hole for the taped hole of the extrusion is left out. The other model has a cube in the corner and also lacks the hole for the tap as it is unnecessary. I haven't printed them yet but They are nearly identical to the original model, in OnShape I just duplicated the parts and adjusted parameters, Parametric modeling FTW! UPDATE 1/23/2020 This part/this thing is now obsolete!!! Newly updated version of all these parts plus new ones at this new thing: https://www.thingiverse.com/thing:4117326 come check them out and print them, tell me what you think! Print Settings Printer: Maker Architect (Replicator 1 Clone w/ Heatbed) Rafts: No Supports: Doesn't Matter Resolution: 0.2mm Infill: 40% Notes: Printed with Ultimachien PLA at 210C 40mm/s perimeters, 90mm/s infill, 25mm/s on first layer, 0.2mm layer height, and 40% infill for strength, feel free to up it for your needs. How I Designed This OnShape Modeled in OnShape, using the extrusion tool and chamfer tool.