Toothed vs smooth idlers gt2 belts? So far I’ve only used smooth ones will I get better prints with toothed ones?
As long as the diameter is correct and the belt is parallel, you wont see a difference.
Maybe save some life in the belt, maybe not - doubt its worth investigating in this matter.
For GT2 it makes no diiference. Due to the differently shaped teeth this is very different if you use T belts.