Ohmygosh! I had a perfect build going last night. I checked it before going to bed at around midnight and woke up to this plate of spaghetti. After two successful prints of the same project, same settings. I opened my email up to send off a pic and ask for further guidance and saw your message. It’s like you read my mind!
It is so disheartening to have this happen repeatedly. I have glued the plate with adhesive (because I was at wits’ end), and it kept happening, so I cleaned it really well, then applied a fresh, light, even layer of MagiGoo again. I figured it had to be a heat factor as #xchrisd had mentioned, it’s just so strange that I used the same settings each time. This build popped off no problem, so it wasn’t adhered to the plate nearly enough. I had it set at 60° but noticed a slight lift so I raised it to 63° and the nozzle temp was at 204°. So adjusting the plate heat is now a concern. Should it be hotter? Cooler? I had it at 60° on the other builds with no issues, at least not later in the build.
Are there other, better options for the build plates?
Looking back at the picture I posted, the plate shifted too. I’m wondering if the filament or the cords had gotten caught up on something. I didn’t notice anything like that when I first saw the calamity though.
I have the printer in my studio, its climate controlled as far as the temperature. Humidity not so much, and I keep the enclosure shut while printing.
Also, is it possible to “dry” the filament too much in the dryer? Could it be a problem that I have left it in the dryer with the dryer on for too long is what I mean.
I’m not seeing any sign that anything came off the plate, though? Or am I missing which footprint did?
It looks like one of three things happened (just guesses):
a) buildplate was VERY SLIGHTLY misaligned, after slinging back and forth a while caught a corner on one of the vertical rails and got slopped off the heat bed, and everything thereafter is a birdnest. (I did this once.)
b) parts curled or cupped up at the tips some, so a head travel movement banged against the nozzle, pushed the plate off and/or just made the axis miss steps, so then same things happens – new layers aren’t where they should be, birdnest… this is actually a bit more likely on big prints.
c) least likely but also possible with big prints, guessing cause I can see the color change. Your filament was wound too tight on the spool, got to a certain point where it was 'pinched in the side between the spool wall and more filament, so instead of feeding it provided too much back tension on the moving print head. Either extrusion gets starved for a bit until it yanks free, so next layers have a ‘gap’ and don’t adhere to what was down before, OR the tension also causes missed steps so next layers are misaligned, same problem as A and B.
In your material settings, try turning on Z hop with Retraction. That would help a) and b).
Not to my understanding. Too hot and it might kinda fuse on the spool, lead to my “yank” supposition. I honestly don’t know though if long term 60C heat soak might gradually embrittle it or something. I wouldn’t think so.
I leave mine in driers all the time, power off, but I also use little sugar-shakers of dessicant in the spool holes in the middle when I do. In my mind that’s kinda like having a sealed storage, but not quite.
Well. We’re not out of the woods yet, but this time looks a lot more promising. I have a teeny bit of stringing but I’ll take that over spaghetti any day! This time the plate is at 60° while the filament is set at 200°. I noticed some of the outside tips of the print were starting to “cup” last night and figured they were going to catch on the nozzle but apparently not this time, and it fixed itself. I am filled with gratitude with all the help from you!
