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First Layer problem. Z-shift
motion@Nocare I'm having a major issue and spent days trying to solve this issue. The print starts great, and after about 2 minutes or so, it starts to lower (I assume it starts right away, but becomes noticeable later) until the hotend starts to grind in to the bed.
I have tried heat soaking the chamber and with the door open. I have tried Z-offset calibration with a clean nozzle and not so clean. I have made dozens of bed mesh calibrations and tried cleaning them from printer config. It doesn't matter if the part is 250x250, or 500x500. It doesn't matter if the part starts from edge of bed and goes to the middle, or from the middle to the edge. I even tried switching slicers thinking maybe something is in the g-code.
Always the same story. Perfect perimeter and first couple of minutes, then the nightmare starts.
I looked at the z-motors and I noticed that they move the bed up little by little during the first layer. On second and third layer, they stop doing it and the print goes with no more issues (if I can get as far as third layer).
So PLEASE I need HELP!
I have tried heat soaking the chamber and with the door open. I have tried Z-offset calibration with a clean nozzle and not so clean. I have made dozens of bed mesh calibrations and tried cleaning them from printer config. It doesn't matter if the part is 250x250, or 500x500. It doesn't matter if the part starts from edge of bed and goes to the middle, or from the middle to the edge. I even tried switching slicers thinking maybe something is in the g-code.
Always the same story. Perfect perimeter and first couple of minutes, then the nightmare starts.
I looked at the z-motors and I noticed that they move the bed up little by little during the first layer. On second and third layer, they stop doing it and the print goes with no more issues (if I can get as far as third layer).
So PLEASE I need HELP!
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