I have a question about layers slipping/being misaligned, Ruling out belts being the cause, I read that the stepper drivers (RAMPS Board) if the pots are not tuned right that they could also cause layers to be off, Now is that true? Would it be a constant layer slippage (like say every 10 layers) or just random when ever/almost the whole print fine then slips at the end?
It will generally be a single layer off by a millimeter or more, though it may happen again if the print is allowed to continue. Usually when this happens, subsequent misalignments will be on the same axis and in the same direction. This can be caused by the current to the motor being set too low (which reduces the motors’s torque), it can be caused by the current being set too high (motor and/or driver overheating, causing loss of torque and/or intermittent thermal shutdown), or just by using motors that can’t provide enough torque for the speed, acceleration, and jerk settings being used and the mass of the carriage.
If you bought a pre-assembled machine or a kit with a pre-programmed controller board, the motors should be spec’d appropriately for the carriage mass and speed/acceleration/jerk settings, but on a self-sourced machine there are obviously more things that can go wrong.
As @Whosa_whatsis said,
“the current being set too high (motor and/or driver overheating, causing loss of torque and/or intermittent thermal shutdown)”
After regulating the current I got good prints in my printrbot simple.
Also another thing caused similar effect is, there was as bolt which slowed down the bed when the bed hit the bolt. After clearing that, I am getting very accurate prints.
All the best.