Hi,
after building my K8200, I had no big problems in printing. One time I have had a shifting in x- and y- axis, but after regulating all stepper voltages between 5 and 5.5V, this problem has gone. But now, it is back, and I have not an idea to solve it.
You can see the effect here:
All axis are in good condition and fresh oiled. The stepper voltages are all between 5 and 5.5. I think, the problem starts or increase when the printer begin to “shake” the heatbed because of printing the filling (3D Honeycomb here).
May I give the y axis a higher voltage again? Or can it be that the room where the printer is located, is too cold? (15-18 degree celsium)
Thanks for your ideas!
Sebastian
Is your stepper voltage really 5.5V?
If yes that’s way too high. Should be 0.55V!
To prevent loss of steps or layer shifting during rapidly changing direction
try to reduce the maximum X/Y jerk value to 15.
Also check that the belt does not slip on the pulleys and the pulleys are tight on the motor axes.
If the original firmware is loaded you may want to upgrade.
The original firmware monitors the end stops.
On the Y end stop if the wires are hanging out and rubbing on the back of the frame and cause intermittent opens.
If this is the case you will need to check the solder joints and cable tie the wires so they don’t hang out and upgrade the firmware to the one that does not monitor the end stops.
This happened to my machine I just fixed the wires and solder joints.
Never had that problem again.
Hi,
thank you for your replys. Of course, the voltage is 0.55 
I have now powered the y-axis to exactly 0.55, not 0.52 as before. I have updated the firmware, too. But while testing, I have found the reason for printing problems and shifting.
This little part circled in red was not really good fixed on the axis of the motor. With slower printing, it worked, but with faster shaking, the problem seems to increase.
Now it is fixed, the printer is with new firmware and better voltage adjustment, and the first printing after fixing is in progress. Thank you a lot for your help!
Sebastian
Nice to hear you got it fixed.
Happy printing!
Happy to hear it’s working.
Enjoy!
I have now powered the y-axis to exactly 0.55, not 0.52 as before. I have updated the firmware, too. But while testing, I have found the reason for printing problems and shifting.