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I thought I have already had and fixed every problem one could possibly have with a 3D printer. Guess I was wrong.

I haven't used my Creality CR-10 for a few weeks, everything was working the last time I tried. Today I wanted to print something minor and the printer just randomly paused a few times in the middle of the print.

To be exact, it seems that after a few G-code commands have been executed the printer just freezes for like 10 seconds and then continues like nothing happened. This occurred a few times and every time the nozzle is melting the surrounding plastic and extruding a little which ruins the print.

I have tried:

  • Print from SD Card
  • Print from Laptop via USB connection to Ultimaker Cura
  • Print different models at different settings

My theory is that either there is a core problem with how Ultimaker Cura exports the G-code files or something is wrong with the printer software. I thought that maybe re-installing the firmware might fix it but I heard that that is a risky process. What do I do?

Trish
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EVARATE
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2 Answers2

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Edit: The z-hop problem has been fixed in Cura 4.2.

This is a known issue with Cura 4.1 when z-hop is enabled.

If you touch the z-axis motor frame while it is apparently stationary, you may feel it is actually moving.

The solution is to set a value (I used something like 250 in conjunction with an Ender 3) for the "Maximum Z Speed".

First you need to get the setting to be visible, so go to the "Settings" menu and choose "Configure setting visibility...":

Configure setting visibility dialog

Then in the "Print settings" panel:

Print settings panel

The full story is available on GitHub at [4.1 - current master branch] Z feed rates #5753.

Andrew Morton
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I experienced the same with 4.1. Everything went back to normal after going back to 4.0 despite that all settings were identical as far as I could see. I compared the two g-code files using a simple file comparison tool. They were very different, hardly anything was the same. I still need to figure out what they mean. The model and thus the g-code files are far to large to go through. So, I will have to use a simple and small model to start unraveling what those differences mean.

trialNerror
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