Heavy Duty Backpack Hook 2

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Note - While this design is a little different, I have posted version 3 here.

 

Heavy Duty Backpack Hook V3 - Free 3D Print Model - MakerWorld

 

This new design raises the backup up a bit more from the floor, extends outward just a little less, and has a slightly higher lip than the model above.

 

I carry a heavy backpack as I have an engineering laptop and the various hooks I found were inadequate.  Enter my over-engineered backpack hook - 2nd iteration.  I printed this using esun PLA+ for a super-clean print.  For moderate strength, printed the model at 30% cubic infill with 3 walls.  For a stronger hook, up it to 40% cubic and 4 walls.  You could probably get away with a wall or two less and less infill if you are hanging a purse, lighter backpack, headphones, etc.

 

The “jaw” has a minimum surface thickness of 6MM (~¼") and a maximum of 47MM ( ~1 13/16") so will accommodate a thick desk surface.

 

The bolt face has a hole in the center that uses a pin to keep the pressure plate centered and able to spin.

 

Note that the bolt hole is 10MM which is about the largest opening that will successfully print without the overhang being too much to print cleanly.  I have printed this several times for office-mates and it has worked every time.  Always make sure your filament is dry and calibrated for your printer.

 

Note in the picture, I have attached a super thin layer of rubber sheeting to prevent slipping as my desktop is really slippery material.