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extruder First layer : 230 Other Layers 240
Bed First layer : 70 Other Layers 75

i used the Prusa PETG configuration in Prusa Slic3r

This is my new filament holders, make with my Prusa MK2S and Filament PM Black PETG. they are perfect

11552

Filament PM (Prusa) PETG from Canada https://3dcustom.ca/filament?olsPage=t%2Fpetg

very good choice, you will have a lot of fun with your Prusa

now you will not lose your time to fix your printer, you will just print a nice object

maybe you can try with Prusa Slic3r, one of my friend have a geeetech printer and since he uses the Prusa Slicer his prints are much better and he has eliminated 90% of his problems

Prusa i3 MK3

Hi i can tell you it's not no 2 - 3 or 4, the second one is terrible, do you try to change extrusion setting?
i use a Prusa MK2S and i never seen something like that. The PETG is the easiest...

Just here https://3dcustom.ca/filament?olsPage=products, they sale filament PM, it's the filament maker for Prusa Filament

If you want good pla, try Filament PM, it's the manufacturer for Prusa Research Filament, They make the new Prusa orange PETG, look for the closer distributor

11525 i used PETG Transparent Blue from Filament PM (bed at 70 degree)

11524 Make your own filament dryer container with Filament PM PETG Transparent Blue