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Z axis stuck when print starts

Posted by vitorbrazil 
Z axis stuck when print starts
February 07, 2018 06:01PM
Here's what happens, pronterface homes all axis, everything moves fine, z axis homes and goes up a bit, extruder heats up, and when it reaches the temperature to start printing, z axis tries to go down a bit but it makes a noise but doesn't move, like it is stuck. I'm not sure how to fix this, since I can move z manually with no problems. Can somebody help?

EDIT: I have determined that the z axis doesn't work properly when controlling it from my computer, but moves a bit, get stuck, moves a bit more, but when I control it from the lcd it works just fine.

Edited 1 time(s). Last edit at 02/07/2018 06:56PM by vitorbrazil.
Re: Z axis stuck when print starts
February 08, 2018 12:31AM
You need to adjust the stepper driver output current depending on the board you have there should be small pots to adjust and they could be off by a fraction of a turn and in this case on the border line of not moving. Locate the pot for Z and turn slightly while running too much either way the more will stop, make noise or overheat. There are exact ways using a meter posted all over web.
Re: Z axis stuck when print starts
February 09, 2018 06:16AM
lower you max z feed rate
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