Clip-on hook for your backpack.
thingiverse
I find myself tying things to my backpack's excess backstraps. I figured it might be something a hook might solve. Print Settings Printer Brand: Robo 3D Printer: R1 ABS + PLA Model Rafts: Doesn't Matter Supports: Doesn't Matter Resolution: .3mm Infill: 30% Notes: On my printer, at .3mm resolution, it just printed the whole thing solid with 3 shells using slic3r.
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