Hairy (but successful) print?
Hello, what can be the cause for such a defect?
This is prusament with its proper settings; previously same filament roll produced very good results.
Some of the defects look even burnt to blackness, but otherwise printer finished the part and it is all good except cosmetically wrong.
Unfortunately I did not see when this happened, only final result.
Thanks.
Best Answer by Chris Laudermilk:
@chris-laudermilk, maybe; this all looks like happened around same time (level).
But what is the cause? Bad slicing? Filament issue?
All on the same layer you say? That really sounds like an under extrusion case like what I've seen. The print is probably a fail, look closely right around where those loose threads are coming out; I'll be you will see missing bits, and the print will likely break easily right there.
As for cause, hard to say exactly. Partial clog, something snagging the filament causing an extruder skip, just the extruder skipping. There's probably some possible other causes I'm not thinking of. When I have seen it on my printers it's mainly been either trying to run too fast, some extruder tuning issues (unlikely here), or the filament spool got snagged somehow.
RE: Hairy (but successful) print?
Did it miss a layer in there somewhere? I've seen something similar, but there's always been a missed layer causing the print to be a failure.
Mini+ (kit) - Revo Micro | Antler Cooling | WiFi (4.4.0RC1)
RE: Hairy (but successful) print?
@chris-laudermilk, maybe; this all looks like happened around same time (level).
But what is the cause? Bad slicing? Filament issue?
RE: Hairy (but successful) print?
Another question: could a small power surge/drop cause such defects?
RE: Hairy (but successful) print?
@chris-laudermilk, maybe; this all looks like happened around same time (level).
But what is the cause? Bad slicing? Filament issue?
All on the same layer you say? That really sounds like an under extrusion case like what I've seen. The print is probably a fail, look closely right around where those loose threads are coming out; I'll be you will see missing bits, and the print will likely break easily right there.
As for cause, hard to say exactly. Partial clog, something snagging the filament causing an extruder skip, just the extruder skipping. There's probably some possible other causes I'm not thinking of. When I have seen it on my printers it's mainly been either trying to run too fast, some extruder tuning issues (unlikely here), or the filament spool got snagged somehow.
Mini+ (kit) - Revo Micro | Antler Cooling | WiFi (4.4.0RC1)
RE: Hairy (but successful) print?
Yeah, spool getting blocked is a possibility indeed.
Yes, exactly same setup printed with no issues before and after, so must be a random single event.
RE: Hairy (but successful) print?
It's odd that some of those strands extend past the perimeter of the print. Is that how it looked when finished? If you're seeing "stringing" (this is not what is usually meant by that term) on the inside of a shape (e.g., extending from one wall to or towards another) then it can be a case of poor adhesion. The tension on the cooling filament from the nozzle movement can pull apart strands with poor adhesion with the underlying layers. You'll see this frequently with threaded tubes with severe overhangs. That doesn't explain those "exploded" strands sticking outside the box though.
The only other thing I can think of is "Do you own a cat or small child?"
RE: Hairy (but successful) print?
@bobstro, haha, yes, I do have both. The printer is boxed though and I see no apparent "intrusion" evidence.
RE: Hairy (but successful) print?
Did you figure out what happened? I'm glad it isn't a recurring issue.
It looks like an attempted spaghetti monster that managed to recover.
@bobstro, my guess is those strings got dragged with the nozzle until they broke loose and sprang to the pictured position. Though you have way more experience with these printers than I do, so I may be wrong.
Mini+ (kit) - Revo Micro | Antler Cooling | WiFi (4.4.0RC1)
RE: Hairy (but successful) print?
Unfortunately, no idea on real cause. Random spool lock is my best guess so far.
I might need to set up a camera for future.