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Wood filament wont extrude / print below 200deg  

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Ido
 Ido
(@ido)
Trusted Member
Wood filament wont extrude / print below 200deg

I have some fillamentum wood filament, according to the website print temperature: 170 - 185 °C, however nothing prints within this range.

When printing at 200 C, no problem, when printing at 180C or 190C, the printer does all the moves, but nothing extrudes, the extruder motor also doesnt move (I have a windmill attached to my motor). There no clog, I can extrude through octoprint, at 200C.

Also when I select the extrude through the Prusa menu it says I need to heat up the nozzle first.

It makes me think the prusa is programmed not to print anything below a certain temp?

Anyone any idea what it can be?

Posted : 26/04/2018 7:36 pm
Kwaad2
(@kwaad2)
Honorable Member
Re: Wood filament wont extrude / print below 200deg

Try 195c.

190c is a "cold extrusion" number.

I have no idea why it's so "high".

The mk2 was set at like 160 or 170c.

It can be disabled... if anyone knows what that gcode is, please say. I'm about to pass out from drinking to much I'm so very tired... so... Goodnight everyone. 🙂

Hi, I'm Sean. I used to work on CNC machines.
I try to not make mistakes, but the decision is YOURS.
Please feel free to donate to my filament/maintance fund.

Posted : 27/04/2018 10:14 am
Ido
 Ido
(@ido)
Trusted Member
Topic starter answered:
Re: Wood filament wont extrude / print below 200deg

thanks, that sounds like a good reason

I found this (source http://marlinfw.org/docs/gcode/M302.html )
M302 ; report current cold extrusion state
M302 P0 ; enable cold extrusion checking
M302 P1 ; disable cold extrusion checking
M302 S0 ; always allow extrusion (disable checking)
M302 S170 ; only allow extrusion above 170
M302 S170 P1 ; set min extrude temp to 170 but leave disabled

Posted : 27/04/2018 10:39 am
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