I checked on the rods,
The X axis is all fine, smooth all the way.
The Y axis has the problem it seems. Its smooth, then its tight, smooth tight smooth tight.
Its not really a pattern, the more i move the head to the back of the machine, the faster the tight parts come.
So that would rule out a few problems i guess? Like sturdyness of the belt, because then the pattern would be the same. Same goes for a rod that has a slight bend?
Do you have any other ideas?
Edit---
I just loosen the Y Axis motor, and the problem is slightly less, could the problem be in the motor?, Or maybe the belt was too tight, although people advised me to tighten it because i had issues with the alignment before.
Edit---
I have loosen the Y axis motor, and put grease on the rods and the problem seem solved.