Another WIDE filament spool roller

Inspired by this. Simplified in my version so that it only requires printing 4 parts (only 2 distinct models).

• Uses 4x 608-2RS bearings (like these)
• Fits rolls up to 13cm wide
• No supports, print on the flat sides
• Press rollers onto bearings on a table, press rollers onto sides, that's it

In my experience, the seams prevent it from rolling smoothly. It's pretty easy to scrape them off with a hobby knife, then it rolls like butter.

Inspired by Juan's Roller. Main differences:

• Wider 13cm (can fit 2kg Prusament roll)
• No cross bars (press fit bearing interfaces)
• Ramp on both sides of middle ramps