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Print goes to shit midway

Kipodolsky

Print goes to shit midway
November 03, 2015 12:39PM

Registered: 10 years ago
Posts: 7

Hi,
The printer prints layers for about 2cm height, than starts printing "stringy" and very flawed layers (see attached picture)
Any ideas?

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gmckee

Re: Print goes to shit midway
November 03, 2015 02:56PM

Registered: 11 years ago
Posts: 182

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

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o_lampe

Re: Print goes to shit midway
November 04, 2015 02:05AM

Registered: 11 years ago
Posts: 5,232

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

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J-Max

Re: Print goes to shit midway
November 04, 2015 05:42AM

Registered: 11 years ago
Posts: 722

Hi,

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

++JM

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Kipodolsky

Re: Print goes to shit midway
November 04, 2015 12:46PM

Registered: 10 years ago
Posts: 7

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