Weird thread printing issue
Designed a little screw tin in FreeCAD. The bottom piece printed the male threads fine, or lets say good enough. But the top piece with female threads just won't print for me. I'm getting what seems to be the PETG filament is not sticking to the thread, or it's detaching. It is a 2mm thread, so it should print fine with 0.2mm layers.
Loose filament strands
If someone could offer some suggestions, I'd appreciate it. Not sure why this print is failing, when the print with male threads worked fine. This is the first time I've seen this phenomena.
RE: Weird thread printing issue
Can you check in your own slicer whether the toolpath resembles the actual print (incorrect) or the expected "large circle spinning around a small circle" when moving through layers?
I've had days where weird issues disappeared on restarting the slicer, and of course the failure mode could not show for anybody else.
There is a parameter "slice resolution" with an obscure default setting at 0 value that would hypothetically cause similar symptoms if incorrect (the loaded file shows "0" default for me).
RE: Weird thread printing issue
Tool path in slicer looks normal. No funny cutting corners. I've never even touched the slice resolution. What's odd was both parts, the male and female were sliced at the same time. The male part printed ok. But the female didn't and hasn't printed correctly four times.
RE: Weird thread printing issue
I heard the filament make a noise, perhaps it is cracking off. Of course if the filament delaminates, then there's no place for the next layer to go. I've kept the PETG in desiccant, and print direct from a PrintDry unit. Maybe it's a bad spool.
Or it's the slicer, I have no idea. I'm baffled.