1 Topic by Tomek

  • Tomek
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  • Registered: 2012-10-01
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Topic: Does anyone know why they run the extruder at low current limit?

Hello folks!

I was setting up new pololu boards earlier today, after I stupidly blew up my old ones when upgrading my power supply....Lets not get into that >.< ...



I noticed the extruder has a rather low current limit, 0.192V, meaning, .48v.

Does anyone know why they keep it so low by default? Seems like a higher rating might help push through some of the partial clogs that aren't so bad at first. Otherwise I'd either rather increase it (I set it to .32 for now- I wouldn't go much higher) or switch to a NEMA14 that might be lighter than the nema17 that they have on there right now.




I hope this hasn't been asked before. I have not found anything by searching the forums.


Happy printing, everyone.

2 Reply by ronsii

  • ronsii
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  • Registered: 2012-10-28
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Re: Does anyone know why they run the extruder at low current limit?

The extruder actually has plenty of power to strip the filament now wink that is why the low power

Now if you could grip it better with less chance of stripping then maybe more power smile

3 Reply by Tomek

  • Tomek
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Re: Does anyone know why they run the extruder at low current limit?

ronsii wrote:

The extruder actually has plenty of power to strip the filament now wink that is why the low power

Now if you could grip it better with less chance of stripping then maybe more power smile


Fair point smile. I have had situations where the extruder skips, though. But I realize, with your point, that there isn't much room to gain, because of the stripping situation.