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Ripples and waves on the sides of round parts.
Posted: 14 Jun 2017, 09:10
by boxsterjohn
I have been having problems with this Ripples and waves on the sides of round parts. No matter what filament i use (ABS, PLA, PETG, etc...) the ripple is always there.(see attached) I don't have this issue straight wall parts. Any help would be appreciated.
Re: Ripples and waves on the sides of round parts.
Posted: 14 Jun 2017, 09:16
by pjr
I seem to recall reading somewhere that reducing acceleration settings can cure this problem.
May well be incorrect, but may be worth a try.
Peter
Re: Ripples and waves on the sides of round parts.
Posted: 14 Jun 2017, 09:34
by boxsterjohn
Hi Peter,
Where can I adjust the acceleration settings?
John
Re: Ripples and waves on the sides of round parts.
Posted: 21 Jun 2017, 00:31
by Giovanni V.
boxsterjohn wrote:Hi Peter,
Where can I adjust the acceleration settings?
John
With the Cubex you can't set the acceleration.
Are you still printing with the same settings ? before the parts were OK and now you have the ripples ?
If yes, check the belts tensions.
If the belts are OK, try to reduce the perimeter speed.
Re: Ripples and waves on the sides of round parts.
Posted: 23 Jun 2017, 06:53
by boxsterjohn
I only get these ripples and waves when I am printing round parts with slight overhang. As you can see in the photo the part is printing very well until it starts to flare out at the top. That's when the ripples start.
Re: Ripples and waves on the sides of round parts.
Posted: 26 Jun 2017, 09:50
by lonesock
What layer thickness and extrusion width are you using for those prints? I start getting surfaces that look like that when each perimeter isn't supported enough by the perimeter below it. You could do a quick test with thinner layers, or wider extrusion width, or slower / more cooled perimeters.
thanks,
Jonathan
P.S. When the new beta to arrives, it has some features that will be useful [8^)
Re: Ripples and waves on the sides of round parts.
Posted: 27 Jun 2017, 14:32
by boxsterjohn
Jonathan,
You were right. I have a 0.4 tip and my extrusion width was 0.3. With a little bit of experimentation, setting the extrusion width to 0.5 reduced the ripples.
Thank you for your advice,
John
Re: Ripples and waves on the sides of round parts.
Posted: 07 Jul 2017, 06:38
by boxsterjohn
Now I have another issue. For dual extrusion the keep warm setting is not working. While the other extruder is printing the other extruder cools completely down.
Re: Ripples and waves on the sides of round parts.
Posted: 09 Jul 2017, 03:31
by Giovanni V.
boxsterjohn wrote:Now I have another issue. For dual extrusion the keep warm setting is not working. While the other extruder is printing the other extruder cools completely down.
Check into "Printer G-Code"/"Cool and retire old ext" you must have this : M<EXT+1>04 S<TEMP>
Re: Ripples and waves on the sides of round parts.
Posted: 10 Jul 2017, 06:26
by boxsterjohn
Yes that gcode is there.