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Underextrusion at low speed but perfect at high?

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Posted · Underextrusion at low speed but perfect at high?

Hi have a strange problem , i have heavy underextrusion on my 2 go when i print at 0.1 with 30 mm/s but perfect prints resolution wise at 0.2 with 60 mm/s at same temperature.

I dont really understand since normally it should be the other way.

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Posted · Underextrusion at low speed but perfect at high?

Filament ? PET or PETG ?

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Posted · Underextrusion at low speed but perfect at high?

You tried with a lower temperature ? 190 - 200

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Posted · Underextrusion at low speed but perfect at high?

You tried with a lower temperature ? 190 - 200

 

Oh yes much much worse then but only at low speed what baffles me a bit.

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Posted · Underextrusion at low speed but perfect at high?

Really strange....

Nozzle size and fan % ?

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Posted · Underextrusion at low speed but perfect at high?

Really strange....

Nozzle size and fan % ?

 

Standard 0.4 and gradually increasing fan speed 0 at stArt 30 at 5 layers 60 at 80 layers and 100 at 120 layers worked well for 2 months . Btw at 0.2 layers are half of 0.1 . Always verifying the temp curve so it only moves up and down about 3 degrees c in any way

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Posted · Underextrusion at low speed but perfect at high?

 

Really strange....

Nozzle size and fan % ?

 

Standard 0.4 and gradually increasing fan speed 0 at stArt 30 at 5 layers 60 at 80 layers and 100 at 120 layers worked well for 2 months . Btw at 0.2 layers are half of 0.1 . Always verifying the temp curve so it only moves up and down about 3 degrees c in any way

 

Ok found out it was simply too slow for that part the head dragged it around.

C etait trop lent la tete a tire la piece dans tous les sens.

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