For simplicity reason, I decided to rename this version: S is changed to 17 as it is the number of teeth...

Now there are already many gears available: 17, 18,25,41. So it seems logical to reference the model with the gear size...

So if I decide to create a commercial version, I can grind 19 to 23 and 26 to 40 tooth gears and change model every year pretending that the new one is definitely better...

The 18 gear 'G2' style gears are definitely interesting, as the shorter base will make a narrower extruder than the 17....

And just working on a 'proprietary' worm gear and flexible drive... I find the spare parts of Flexdrive or Zesty a bit on the expensive side, not to mention that they don't sell the worm gear alone.

So for people that can't recycle their already purchased shafts & worm gears, I might be able to supply soon.