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Cannot get the settings dialed in right for volcano nozzle

Posted: Fri Apr 01, 2016 11:57 am
by Emuuuh
I recently upgraded my printer with a e3d volcano nozzle&heaterblock (0.8mm)(on a lite hotend) and a bondtech QR extruder.
Since then i cannot get rid of the blobs on the sides of my print.

Ive tried a lot of combinations between wipe, coasting distance, retraction settings and extra restart distance (negative). But it all doesn't seem to help
With higher coasting or - restart distance I get holes in my part but the blobs don't go away.

Ive included a picture of the settings and a picture of the part with these settings.
What should I try?

Thanks in advance!

Images:
https://www.dropbox.com/s/hbpt4b3o3fv1t ... 6.jpg?dl=0
https://www.dropbox.com/s/h9t5v5jg9yfxb ... 4.png?dl=0

Other info:
Pla 1.75mm
205 degrees celcius
Bowden tube +-400mm
Speed max = 60mm/s

Re: Cannot get the settings dialed in right for volcano nozz

Posted: Sat Apr 02, 2016 11:41 am
by CompoundCarl
If you are getting holes, but still have blobs, it just means you are changing the wrong setting. If you have a large negative value for extra restart distance (i.e. -0.2mm or something like that) and a fairly large coasting value, then I'd be really surprised if you were still seeing blobs.

What are you exact settings? When you watch the printer, do the blobs appear right at the start of the perimeter, or do they not show up until the nozzle is completing the perimeter loop?

PS - have you read this? https://www.simplify3d.com/support/prin ... s-and-zits