Hairy prints, nozzle temperature.

[benoit 0]

Hi everyone,

I can't seem to figure out how to prevent the formation of "hair" left behind while the nozzle travels between two non-printing points.

It seems there is too much pressure pushing the PLA out, even when the motor is not pushing it comes out.

I've tried lowering the temperature until it stops, but then the PLA doesn't smear or set on the print (making it come out like uncooked rice vermicelli).

Is there any way to overcome this problem?

It's a real pain to have all the holes and small details jammed up with extra junk, effectively making the prints useless.

FYI: PLA is from Ultimaker and the printer runs in a 25C temperature controlled room and the nozzle is preheated for 10 minutes before each first print.

Please advise.

Thanks

benoit.

[futurejames 0]

I think the things you are looking for is combing and retraction.

Retraction: Pulls on the filament while going over open areas.

Comb: Avoids going over the open areas.

[benoit 0]

Hey futurejames, sounds like you're on the right track... now anyone know how to parametrizing this?

[benoit 0]

Alright, turns out combing is an option found in Netfabb for ultimaker (but not in the RepG).

[futurejames 0]

I know both Cura and KISSlicer support retraction. I haven't used RepG in awhile.