The file 'Desk-Edge Magnetic Catching-Rail 3D Printer Model' is (stl) file type, size is 32.7KB.
Use 6mm of filament as dowels to join the pieces, fill with 20x10x5mm magnets and bolt to the front of a desk.
You'll not easily drop most metal things again.
Next version will be thinner outwards but thicker elsewhere, with a single track, for durability.
Just try not to hit it with your chair for now.
CatcherRail.stl | 122.3KB |