Magnetic adjustable spool holder

In this remix I've added 2 holes for magnets, some texture to the bottom (to prevent sliding a bit) and nuts for rail mounting.

The holder is able to fit the 2 kg spool of Prusament PLA/PETG Recycled.

You will need:
2x 8x8mm (4mm height) square magnets (N48 or stronger)
4x screw M3 x 8 mm 
4x screw M3 x 14 mm 
8x nut M3
4x Bearings 608

Check the gcode for printing directions, print with 0.2 mm layer height.

Assembly guide:

1. Put in the screws and the nuts
    
    
2. Lay one of the pieces on the side and put in the magnets and the bearings
   
    
3. Tighten the screws which hold the bearings
   
    
4. Insert nuts for the rail holder screws
   
    
5. Tighten the rail holder screws for one of the pieces
   
    
6. Adjust the other piece for your spool width, and tighten that as well
    
7. (Optional) Place it on the top of your PrusaBox :)