Thanks for your comment and help!
I've now tried printing with a temp of 205C, and that seemed to help a bit. I also increased the minimal layer time to 10sec.
A next one I would print with a finer layer, 0.1mm. It is a steep overhang, so give the printing filament a base to hold on to.
Wouldn't 0.2mm layer height give it more give more of a base to hold on to, or am I thinking wrong?
Oh and yes, PLA will surely fail sooner than other materials, but this duct is just a temporary one as I'm installing a second extruder soon
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3dcase 37
Hi Oliver,
Speed and temperature I guess.
A next one I would print with a finer layer, 0.1mm. It is a steep overhang, so give the printing filament a base to hold on to.
Lower the printing speed, to give the filament more cooldown time, and/or set minimal layer time to 10sec.
Depending on your pla, try a temp of 205 or 200.
Use as much fan as possible.
set a 0.6 or 0.5 wall thickness, Needs one pass. and use a infill of 25 % Should be strong enough for a fanduct and reduces the volume to cool down.
My best guess is, while printing you have noticed a lot of curling. After printing, the material shrinks and curls up a few mm of the print. pulling away the print from the nozzle, so there is nothing to drop the filament on to. making things worse. You can use a finger or screwdriver to check if the top of the print is hard or still soft.
Last but not least, normal Pla is a pretty low-tech material for a fanduct, my feeling is your tip surrounding the nozzle wont last long. better use something like abs or pla90.
Regards Kees
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