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Print goes to shit midway

Posted by Kipodolsky 
Print goes to shit midway
November 03, 2015 12:39PM
Hi,
The printer prints layers for about 2cm height, than starts printing "stringy" and very flawed layers (see attached picture)
Any ideas?
Attachments:
open | download - 20151103.jpg (523 KB)
Re: Print goes to shit midway
November 03, 2015 02:56PM
Have you tried a different slicer? Take a look at the print when it goes amiss. Do you see and frame issues?


Prusa i3 Rework - Ramps 1.4 - E3d Lite6 - Full Graphic LCD Controller
Re: Print goes to shit midway
November 04, 2015 02:05AM
Is it a matter of print time or print height?
Find out with different prints.
If it's a time issue, then check your cooling ( PSU, stepper-drivers, hotend )
If it's a height issue, check the mechanics.
-Olaf
Re: Print goes to shit midway
November 04, 2015 05:42AM
Hi,

This could be overheating of the hotend or the extruder motor/driver.
Check hotend heatsink ventilation and motor/driver heat.

++JM
Re: Print goes to shit midway
November 04, 2015 12:46PM
Well, the extruder was indeed the cause, but in a different way.
Apparently the cog wheel set on the extruder motor has lost its grip on the motor shaft, and the extruder was almost usless.
I reset the wheel in its place and strengthen the bind, now it look as if solid printing is back on the menu!

Thanks
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