Crowning confuses my printer

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swsch
Posts: 15
Joined: 29 Jan 2015, 16:57

Crowning confuses my printer

Post 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 3070 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?
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Davide Ardizzoia
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Joined: 07 Nov 2014, 13:05
Location: Oleggio, Italy
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Re: Crowning confuses my printer

Post by Davide Ardizzoia »

Are you sure about correctness of your prime and suck settings ?
Prime should always be >= suck.

Best Regards
Davide Ardizzoia
swsch
Posts: 15
Joined: 29 Jan 2015, 16:57

Re: Crowning confuses my printer

Post 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!
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Davide Ardizzoia
Posts: 122
Joined: 07 Nov 2014, 13:05
Location: Oleggio, Italy
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Re: Crowning confuses my printer

Post by Davide Ardizzoia »

What is your crowning setting ?

Best Regards
Davide Ardizzoia
swsch
Posts: 15
Joined: 29 Jan 2015, 16:57

Re: Crowning confuses my printer

Post by swsch »

For the layer shown it was either 2mm or 3mm.
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