This particular model has failed 3 or 4 times at layer 200 or so. Going through step-by-step changes to diagnose.
Bambu P1S, firmware current.
Textured PEI plate. 0.4mm hardened steel nozzle
Default slicer settings, basically I only added supports
Overture gold PETG
There are more prints that failed here.
I want to print as many of those gold coins (Joan of Arc) on one plate as I can, so I was trying vertical with supports, along with two copies of a rectangular plaque (Christine de Pisan). Joan failed when completely vertical, so I angled her and tried the 2 x 2 combo again. Christine was going fine when Joan failed. Tried again. Fail.
I removed Christine, two Joans had similar failure.
Dried my Overture Gold PETG to 7% humidity.
Reduced to one Joan. failed again.
Checked videos and slicer, it seems to be at layer 200 or so out of 397. Everything’s fine in one frame, in the next frame Joan has been pushed along the build plate in the angle of travel of the print head.
Any reason I shouldn’t consider this an adhesion failure?
“Heat creep”?? Door closed each prior print. Now trying with door open.
I saw something about belt tensioning, so I will try that.
Joan and Christine trial.3mf (5.4 MB)
Still failed with door wide open, 20 layers higher. Watched closely. Brim started pulling up around layer 210, coin would jump back and forth. Finally let go around layer 220.
Brim type “Outer and Inner”
Brim width 15 mm
Is this the wrong way to print a coin, or anything else tall and narrow?
My white PETG is pretty bulletproof, I will see if I get different results with that.
? can’t upload more video ?
It’s an adhesion failure, partially due to material shrink.
Don’t leave the door open, it’s making the issue worse if anything.
Dry your filament, then dry it some more.
Get your build plate as clean as possible. Dish soap, hot water, scrub with a nylon brush, dry with paper towel.
Use glue.
If you’re using a lot of walls, reduce them.
Plates always scrubbed with Dawn and warm water.
AMS reports 11% humidity.
Door closed until last print.
Hairspray on textured PEI plate
AMS humidity is irrelevant. Filament that has grabbed moisture doesn’t let it go under ambient conditions, it needs extended periods of heat and dry surrounding atmosphere to draw it out.
Hairspray isn’t the way. Too many variables. Glue stick at minimum, liquid glue ideally.
Make brim bigger.
Try placing the items together to have a big connected brim between all of them. This should help.
You don’t show us what the supports look like behind that coin but I sure hope you painted them up onto the back, so that it’s weight is resting on some supports and not acting as a lever / hinge at the bottom corner. Imagine where the center of gravity is at that exact height you’re having problems at
If it’s got adequate support I would say clean your plate again, add a few mm more of brim, consider glue. The normal adhesion fellas
I went only automatic on the supports, and they were generated on the bottom brim of the coin. None were generated on the back. I think you’re a vote for “paint supports on the back.”
15mm brim. I thought that was nuts but it was not enough.
I’ve had this spool in heated drying cycles repeatedly for over a week.
Completely successful with white PETG. I printed a clone of the object onto a new plate and Studio chopped the brim and the (useless) block. Even without those this white filament printed fine.
So I have to do something about this gold filament to make it work. I really like how it looks, but maybe I should try another brand. I thought I had this filament properly calibrated but perhaps there’s something I missed.
