Universal Filament Spool Holder -REMIX- Less Hardware

Remix of in_the_garage's Universal Filament Spool Holder - http://www.thingiverse.com/thing:581788

Re-designed to use less hardware. No need for threaded rod or nuts. I would still recommend the aluminium tubes. But I've included printable tubes as an option.

Press fit four 608, 608-Z, 608-RS, 608-ZZ or 608-2RS bearings onto the two sides first. Then press fit the aluminum tubes or printed tubes. Install the base last to hold everything together. Adding four silicone stick-on feet to the b