Upgraded a MK3 to MK3S+. Now the flow rate is slightly different. Can it be permanently set on the printer?
The MK3S+ seems to have a lower flow rate than the MK3 had: I ran the same Gcode file, a simple PETG part that the MK3 had made dozens of before its upgrade. The MK3S+ print attempts had bed-adhesion problems, really sketchy infill, and sparse-looking perimeters. I adjusted Flow on the printer to 110, and those problems immediately went away.
But this Flow adjustment resets when the printer's rebooted.
I also don't want to change the flow multiplier in PrusaSlicer because I'm running MK3 and MK3S+ printers. The PrusaSlicer settings I've been using all along won't work on the MK3S+ because of its different flow level, and I'd prefer not to have to now use two sets of Gcode to run different printers. If I do really need to... I guess that's how it is, but some permanent adjustment on the printer would be good.
I tried the M500 (Save Settings) command on it, but Flow went back to 100 after a reboot.
You should be able to use the preset profile without problems.
I suggest a cold pull in case there is a partial clog confusing the issue.
Cheerio,
RE: Upgraded a MK3 to MK3S+. Now the flow rate is slightly different. Can it be permanently set on the printer?
Along with the MK3S+ upgrade, I also bought and put in a new hotend and nozzle.
Though that kind of makes less sense - a new hotend should flow more freely than a years-old one that might have crud inside; the new one's putting out less material for whatever reason.
But in the meantime since the original post, I did try something that seems to have worked: M200 + M500.
I used a Gcode file with two commands: M200 D1.575 to set the filament diameter to be about 10% smaller than it really is, and M500 to save it. That seems to have resolved the issue: PETG prints look normal, and the tiny gaps at infill-perimeter interfaces in PLA prints are gone.