Brio Train wash (roll-holder only, thinner-version)

thingiverse

I had an extra paint roller, 5cm long and ready to use, for this cool brio accessory. But the inside tube was too narrow. The rollers already come with a mechanism that lets them fit snugly onto a handle while still spinning freely - it's a standard paint roller feature after all! So I tweaked the design of the roller holder to make it narrower.