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Crowning confuses my printer

Posted: 01 Feb 2015, 15:40
by swsch
I'm printing some components with a Velleman K8200 with 2.85 mm filament through a 0.5 mm nozzle at 210 °C.

Loops and perimeter come out fine, but solid infill has a problem right after the crowning paths caused multiple retractions in a short interval.
crown.png
crown.png (8 KiB) Viewed 3077 times
The perimeter runs clockwise, the crown segments are filled in this sequence, too.
The solid infill starts in the bottom left corner and runs upwards, the part in the image above is roughly area that looks like its missing some filament. The rest of the infill comes out fine again.

What's a good tweak for this?

Reducing speed (perim. 30, loops 42.5, solid 37.5, sparse 50)?

Tweaking flow?

Patching the gcode?

Re: Crowning confuses my printer

Posted: 01 Feb 2015, 16:06
by Davide Ardizzoia
Are you sure about correctness of your prime and suck settings ?
Prime should always be >= suck.

Best Regards
Davide Ardizzoia

Re: Crowning confuses my printer

Posted: 01 Feb 2015, 17:04
by swsch
ooohh.. of course. Right now both are at 2.0. I'll try to increase priming once the current job is finished.

Thanks!

Re: Crowning confuses my printer

Posted: 01 Feb 2015, 17:37
by Davide Ardizzoia
What is your crowning setting ?

Best Regards
Davide Ardizzoia

Re: Crowning confuses my printer

Posted: 02 Feb 2015, 10:41
by swsch
For the layer shown it was either 2mm or 3mm.