Filament Box Tube Holder

Simple bracket to hold a tube inside a filament box for multiple spools to spin on. Easy to use as any pipe or tube up to 42mm diameter just drops straight on! I use 42mm poly pipe from my local hardware store.

Combine this with my [Filament Box Feeder](http://www.thingiverse.com/thing:1652260) for a complete filament box solution!