Hi everyone,

I am printing in flexPLA and at some points the 3D printer creates shifts in the layers, only in the X-direction.
See the pic attached for an example.

There can be many causes:
http://reprap.org/wiki/Shifted_layers

The belt tensions are exactly right and the motors work fine.
I suspect a backlash in one of the C-clamps causing at some point too much friction.
Or can it be something simple like the arms needing oil?

Has anyone else had the same problem?