Creality CR-5 Pro destroyed it's print head ;)

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1

Hi

I left it printing overnight. In the morning I got a real surprise.

Pic1
Pic2

Creality CR-5 Pro printer lifted up the model from the heating bed (60degree) and hit the motor and fill the filament all around the head. I will need to change the printing head.

As my printed models were Ok but not perfect I decided to calibrate the printed a day before.

What I did a day before:

  • XYZ cube test. It was 100% accurate when measuring with a digital meter.
  • temperature tower test. Got the best result at 205 degree
  • retraction tower test. Got the best result at 9 (which seems a bit high value)
  • first layer print test - was fine

I updated Cura default preset Standard Quality - 0.2 mm with those calibrated values, level the bed, and start printing.

So the question is what caused this? What can be done to avoid it? Is there any Octoprint plugin to halt the printing when anomalies like this happen?

I need to know how to troubleshoot this in order not to happen again.

Thank you very much!

Br,
kd

2

Hello @kdiamond !

That looks darn bad.

First step would be to share the systeminfo bundle as it was asked in the template you deleted.

Pleas post it into your next post.

3

Thank you for your reply.

I'm sorry, my first post here. Here it is:
octoprint-systeminfo-20220201151644.zip (1016.6 KB)

Br.
kd

4

The print from 18:30 up to 07:51 was without issue.

2022-01-31 18:30:54,331 - octoprint.util.comm - INFO - Changing monitoring state from "Starting" to "Printing"
2022-01-31 18:36:38,459 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2022-01-31 18:51:38,460 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2022-01-31 19:06:38,462 - octoprint.server.heartbeat - INFO - Server heartbeat <3
...
...
...
2022-02-01 07:51:38,548 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2022-02-01 07:51:43,007 - octoprint.util.comm - INFO - Finished in 48048.883 s.
2022-02-01 07:51:43,008 - octoprint.util.comm - INFO - Changing monitoring state from "Printing" to "Finishing"

It's difficult to say what happened exactly and why.

The removable print surface detached from the bed because it got stuck to the print head.
Maybe the part cooling nozzle got lose and got stuck to the object.

What maybe can be is, that the slicer is set to absolute extrusion and the printer to relative.

What was it you wanted to print?

BTW: The webcamd.log is quite huge

5

Spaghetti Detective likely would've helped. With some effort you can likely clean that assembly up and get it working.

6

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