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Extruder motor not running while printing

Posted by hmcclint

hmcclint

Extruder motor not running while printing
February 01, 2016 10:35AM

Registered: 8 years ago
Posts: 11

Hi!
I have an Ormerod 2 and have it set to extrude using a paste extruder instead of the ABS/PLA. When I manually extrude using Pronterface, the motor works fine, but when I send a print from the SD card, the nozzle moves as if it's printing, but the extruder motor doesn't turn. Do you have any suggestions? It's connected by USB as well as to a power supply so I think it should be getting enough current.

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dmould

Re: Extruder motor not running while printing
February 01, 2016 11:40AM

Registered: 10 years ago
Posts: 2,472

That suggests that you have not selected the correct tool or have not enabled cold extrude (assuming your paste extruder does not need a hot nozzle).

Dave

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hmcclint

Re: Extruder motor not running while printing
February 01, 2016 12:12PM

Registered: 8 years ago
Posts: 11

I send T0 to select the motor (I only have 1 extruder hooked up) and then M302 P1 to set the extruder to cool (I don't need the hot end). I know T0 must be correct because when I manually send a command for the extruder to extrude (without the nozzle moving aroung), the motor works fine.

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dmould

Re: Extruder motor not running while printing
February 02, 2016 06:45AM

Registered: 10 years ago
Posts: 2,472

Look at the first few lines of your G-code. I suspect that it contains commands that selects a different tool and/or disables cold extrude.

Dave