Solder Scroll - Adjustable Solder Tool Without Gears

Thanks to Victor for the great Solder Scroll.

In the original the drive rollers have different diameters, but the gears give them the same speed. This causes a drive wheel to slip. I removed the gears, widened the rollers and inserted a 5x11x5 (685 ZZ) bearing into the small roller. This works very well. LH is the left-handed version (like original), RH is the right-handed version. Use all remaining parts from the original and possibly the Modified spool for Solder Scroll from Jindrich.

I recommend printing out the bearing bolt solidly, using PETG (PLA permanently deforms under load, PETG springs back) and adding more walls.

To test, you can use the small roller with a 5 mm hole (without bearings), then you can try out the difference...

Gears removed, rollers widened.