I’ve been using PETG exclusively using several different brand printers. I will say categorically that people that are complaining about PETG, it isn’t the printer. PETG is notoriously hard to print well. Every vendor has their own secret additives, and here’s an excellent example of this:
I use Hatchbox PETG. Black filament has been flawless using the ‘generic PETG’ profile. Same vendor, same type, white has been sketchy. Yellow, I gave up. So, what’s the problem? It’s that every color, even from the same brand, same plastic, has additives to vary the properties. Blobbing and stringing is the usual problem, but bed adhesion also varies. Sometimes glue stick works. Sometimes Aqua-Net works. It’s like divination using goat entrails. When it works, it works great. When it doesn’t, massive fail. So, I’m now thinking I’ll go back to PLA for things that don’t need PETG properties. If you can’t print PLA, printing isn’t your thing.
PS - as I posted in another thread, when it works,. it really works. I printed a torture test, 4" unsupported bridge using Hatchbox black PETG. Perfert. I’m really impressed.
I’ve been curious how PETG will print with things slowed down to Prusa speeds. If everything appears fine, it’s easier to ramp up from a known stable configuration until a reasonable higher-speed combination is achieved. PETG seems to have a narrow transition temperature range. Solid to liquid in just a few degrees. It’s good stuff, but tricky if pushed hard.
just got my X1c today and curently printing the poop bucket in Gray Polymaker PETG, using the Generic PETG profile. So far this is the best PETG print I have seen. We’ll see if I still think so when it finishes.
If I remember right I slowed down my PETG profile in PrusaSlicer and normally it print fine. I basically only print PETG in black or gray for the colored stuff I normally bring in PLA because it doesn’t need the properties of PETG
PETG is actually simple to print on Bambu.
I am in production and no problem printing PETG on my machines.
Large area, tall slender or small objects print beautiful.
Print speed 100 to 200 and temps 255/75.
Build plate Tex and Eng no glue ■■■■.
Filament is Atomic PETG.
I do keep filament dry.
I set up “Prusa-like” profiles and slowed everything down to what my MK3S+ used on PETG. Beautiful results, but it took as long to print a Benchy as it did on the Prusa. Made some changes and cut the time in half with no decrease in quality. I got a CHT nozzle on it and will see if the additional melt surface area will let me ramp up speeds without increasing nozzle temp.
