Material vs mechanics? Extruder over-acceleration
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When I print, I can easily get corner ghosting, and I've been able to track it down to the acceleration setting of the extruder.
If I reduce the extruder's acceleration to the point that it is just fast enough to keep up with the print, everything is smooth and beautiful.
Anything above that and the ghosting comes back.
Seems reasonable behavior to me.
Does this seem to be other's experience?
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@gnydick
I would have thought ghosting was a byproduct of oscillating on the X & Y axis
Perhaps when you're reducing the acceleration of the extruder, you are forcing X & Y to reduce speed/acceleration while it "waits" for the extruder?
What happens if you leave the extruder acceleration as is and reduce X & Y? -
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@deckingman it happens on curved sections as well. I think it's really the extruder. You can see the diminishing spacing between the ripples. Each photo is more magnified than the previous.
The ghosting doesn't coincide with the direction changes.
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@gnydick I can't see how that makes an difference. Curves are made up of a series of short segmented moves so there is a direction change between them. Each segment of the curve is an XYE move so if you reduce the E acceleration to the point where it is the dominant factor, then it will affect X and Y in order to keep everything synchronised.
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@deckingman That's true, but if it were directionally induced, the spacing wouldn't be continuously shrinking. That was my point.
I'm also tracking the actual printing speeds from the web gui and they are no different between using E1000 and E3000 acceleration. The prints come out at identical times. Only the surface quality changes.
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@gnydick It doesn't make any sense - unless......are you using pressure advance by any chance? That is one thing that affects only the extruder.
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@deckingman I'm going to close this post and start a new one, I think I've mischaracterized some things and would like a fresh start on the convo
