About this 3D model

This hook is inspired by the Ikea BJÄRNUM model. When you don't use it, you can fold it up, so it doesn't bother you. The one in the pics is printed in PLA with 50% infill. the backpack weight is 6KG (I didn't tested maximal load yet). you will need 2 pieces (20 mm and 6mm) 3mm ø steel bar https://s.click.aliexpress.com/e/_A05Dvp and 1 ø 8mm x3mm magnet https://s.click.aliexpress.com/e/_A9cMFZ for each hook (and 2 3mm screws+dowels to fix it to the wall)