Backpack hanger

   This is not a direct remix of the model by the author indicated in the short description. I took the idea as a basis, but I wanted to make the model file accessible and in its own appearance. I also did not like the moments that could lead to defects on printers with weak airflow, I tried not to allow them.

   There are different models by rod diameter 20,25,30 mm
There are models with rounding and chamfer (izi) at the bottom so that the printing goes better.

Printing recommendations:

   Printed it from PETG, for strength you can increase the number of perimeters. I recommend the thickness of the base, cover and perimeters from 2 mm in case of heavy backpacks.

I also recommend enabling the "make overhangs printable" option for the top of the backpack holder. It will slightly correct the geometry that is difficult to correct in the model itself in the modeling program.