Slim Horizontal Spool Holder

Just a simply horizontal spool holder. I needed slim and easy to print spool holder for my filament box [https://www.thingiverse.com/thing:2932294].

Instruction:
1. Print top and bottom part of slim or fat spool holder
2. Get some 6 mm airsoft pellets (amunition for ASG). Don't buy the cheap one. You need the balls to be smothe to get them roll.
3. Place the balls in the bottom part. You will have to push them down to the channel. The balls should move freely in the channel and shouldn't