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kristofdebeer

How to set the temperature at 0 for pen plotter or 3D light painting?

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If you want to you use the Ultimaker 2 as a pen plotter you need to put the temperature at 0.  

I tried following the tutorial but unfortunately even with the custom .ini file it doesn't seem to work.  When I insert the SD-card and start to print the printers starts heating up...

What am i doing wrong?

Edited by Guest

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I think in default firmware you can just start a print, go into tune, rotate the temperature setting back to 0 and it will start.... there's a minimal temperature safety in firmaware for the extruder, but you're not using the extruder...

I added some more info on the YM page of my pen design;

https://www.youmagine.com/designs/ultiplotter-plotter-head-for-the-ultimaker2

In the meantime @tinkergnome made a new firmware you can use to more easy change the size settings in the firmware, you'll find it here;

https://ultimaker.com/en/community/view/7436-more-information-during-print?page=9#reply-118227

Edited by Guest

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I think in default firmware you can just start a print, go into tune, rotate the temperature setting back to 0 and it will start.... there's a minimal temperature safety in firmaware for the extruder, but you're not using the extruder...

 

Just an idea... wouldn't it be easier to avoid UltiGcode for this kind of application?

Personally i would add a new machine profile in Cura, set the gcode flavor to ‘RepRap‘ and change all temperature settings to zero. That should be all that's needed to skip the heatup stage at all, shouldn't it?

The 'avoid cold extrusion' feature kicks in and prevents movements of the E-axis - actually a nice spin-off in this case... :)

While you're at it: consider to deactivate combing and enable z-hop while retracting. @ultiarjan - i'm not sure with the latter - would this even have any effect for this use case...?

Edited by Guest

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Yeah, your right, and you would also be able to set the start position in the start code just to avoid hitting the front panel... but you can solve the position issues for bed leveling... but if you use a pen attachment using about the same bedhight as normal printing you would not have to do that..

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