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A kit 3D printer

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Joules:
Increase the current to the motors and see if you have step over, Z lift set as the head maybe catching the print during a rapid move.

picclock:
Hi Pete49

I think Joules has hit the nail on the head. Set the current for the motor with the pot on the stepper driver. You can usually do this with a meter, by adjusting the tiny potentiometer. Value should be set approx 15% below rated motor current. Only other thing to check is the jerk value in Marlin. It defaults to 20mm/sec but it may have been altered. You can find it in configuration.h after the acceleration and speed settings.

Hope this helps

Best Regards

picclock

Pete49:
 :mmr:
Thanks again guys-------------------- it was the jerk thingi....All good now
Pete

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