Perimeter Problems
1 of my 7 Minis has an issue printing straight vertical perimeters. They are not bonded together. You can separate the perimeters with your fingernail. It doesn't matter if it's a rectangle or a circle. Curved vertical surfaces are OK. But the strange thing is it's always the front side of the model. Never the sides or the back. Exists with PLA and PETG. Exists with hardened steel and brass nozzles. Exists with stock settings and generic filament profiles.
One workaround I have is reducing the perimeter line width but when using 7 of the Mini's I like to use the same presets for each one. This workaround isn't really solving the underlying issue.
I also tried the filament multiplier but that didn't work as well.
Another one has an issue with this as well but it's not as pronounced. I tried taking pictures but my camera won't focus.
What do you recommend checking next?
Check your fans, particularly the print fan. Make sure they spin, the blades are clean, there is no stringing clogging the hub and that nothing obstructs the air flow.
Cheerio,
RE: Perimeter Problems
IIRC I had changed the fans, but I'll recheck. Thanks!
RE: Perimeter Problems
I did another print same as before but with the fans turned off. Same result. The front perimeters peel off because they're not bonded.
RE: Perimeter Problems
IIRC I had changed the fans, but I'll recheck
Makes me also wonder about the fans, specifically the parts cooling fan (aka print fan). Did you replace the fan with an original fan or a different brand? I'd check the fan wires for any issues as well as the place where they're plugged into the motherboard. Given that you're only seeing it on one Mini (and assuming it's identical to the other ones, not a modified hotend), and it's always the front (assuming you can rotate the model and the defect will stay in the front), it's hard to think of anything but the parts cooling fan.
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...
RE: Perimeter Problems
I did another print with the same settings, but with no part cooling. It was the same result. It's a Prusa fan and stock hotend.