Hello Shnick, what apparently worked for me in a similar situation of chronic underextrusion on the UM2, getting worse and worse over time, was to change the teflon spacer, see http://umforum.ultimaker.com/index.php?/topic/9320-is-this-teflon-coupler-gone/
Not sure this will apply to your problem, but it might be worth a try.
Up to now I was never able to get a decent print with PLA if the layer height was over 0.1, because of underextrusion. 0.1 and speeds around 30-50 work well for me right now. The slower, the better quality.
Recommended Posts
kris 29
Hi Shnick,
I use two UM2's, one purely for PLA and one for ABS. Both PLA and ABS from Innofil.
For PLA: Going any higher then 50mm/s and 0.1mm layer thickness will always cause underextrusion for me as well. I usually stick below these values. If the dimensions are not critical I even raise the temperature to 240°C.
ABS is a totally different story: 75mm/s and 0.25mm layer thickness are no problem at all, I even lower the temperature from 260°C to 240°C usually without any signs of underextrusion for >20h prints.
Seems to me that at least the Innofil PLA is a lot harder to extrude. I'll change to colorfabb hoping it will get better.
Cheers,
Kris
Link to post
Share on other sites