Printing issue with X-axis motor


Here's an idea of what's going on. This is a picture of the progress during the first layer:

Picture of the progress during the first layer

Printing a simple calibration square, and as you can see, my X-axis is not moving like it should. I turned my speeds down from 30 mm/s to 5 mm/s and this is the result.

What happens:

  1. Printing starts after homing and proper temperatures have been reached.
  2. Starting from lower left, printing starts, filament pushed out.
  3. X-axis motor is told to move, but it doesn't. Takes 0.5 seconds to think about the given order and only then moves. By now, a smudge of filament has been pushed into a blob at the start corner but the move is executed at a proper speed. Reaches "destination" and stops moving. This has resulted in too short of a face for X-axis.
  4. Y-axis receives the order to move and does so properly. Lower left corner is done properly due to Y axis moving instantly.
  5. Y reaches it goal destination, X receives orders to go to left. Lags behind, filament pushed out creates a smudgy corner due to lag. Reaches "destination" (lag is the same so it creates a regular pattern)
  6. Y receives orders to go back to start coordinates and does so.

And this can be seen on the diagonal lines. Y moves constantly, X lags behind so it creates those vertical lines.

No idea what's causing this and causing a bit of a headache.

Things I've tried:

  • Slowing down
  • Calibrations
  • Adjusting belt tension
  • Different COM port
  • Printing from SD card
  • Tightening the pulley teeth onto the stepper motor

Getting this far was already a pain and now I'm kinda stuck.


Posted 2021-02-21T00:54:08.363

Reputation: 11

Is this a new printer to you, or have you had it working fine in the past? – fred_dot_u – 2021-02-21T01:22:05.833

If you try to move the head when the X-stepper is enabled, then the print head sits still? – dotswe – 2021-02-21T01:53:52.523

@fred_dot_u It was working fine when I last used it but that was a long time ago. – Exce – 2021-02-21T02:49:44.690

@dotswe No. The head will move instantly as commanded. Which makes this really weird. – Exce – 2021-02-21T03:05:45.567

at first glance, your z-height is improper. The filament should be flatter, implying the bed should be higher or the nozzle lower, depending on the mechanical portion of the printer. Consider to re-calibrate (re-zero) and re-level the bed. – fred_dot_u – 2021-02-21T12:16:49.180

Is perhaps the nozzle loose? – dotswe – 2021-02-21T12:24:56.687

@fred_dot_u That's just because I don't want to clog the nozzle due to the filament being pushed out when there's no movement by the X-axis. – Exce – 2021-02-21T23:00:08.310

@dotswe not sure what you mean by this, since my X is very visibly not moving when it clearly should be during printing. – Exce – 2021-02-21T23:00:12.407

No answers