PETG prints got bad, PLA is fine
Since I got my mk4 (that was end of February) I have been printing PETG - no problem.
Then suddenly mid June the prints got bad, with missing layers. The nozzle clogged, the whole hot end got dirty with filament.
I've recently had time to clean that mess and make cold pulls. Now, the mk4 prints PLA well, but not PETG. I think I'm going to print PLA for a while in hope to "clean" the print head, then try PETG again. I just don't understand what might have turned a wonderfuly printing machine in a problem machine. Maybe I did something wrong? So I'd be happy if anyone with experience can suggest what to do (continue like that? Replace nozzle? replace hot end?). Thank you!
RE: PETG prints got bad, PLA is fine
Have you tried a different roll and brand of PETG?
--------------------
Chuck H
3D Printer Review Blog
RE: PETG prints got bad, PLA is fine
I tried two rolls of two different brands, one of them new. As I said it did work splendidly before, then no more.
I'm trying longer prints in PLA to make sure that with PLA it works really.
RE: PETG prints got bad, PLA is fine
Ok. It sounds like you have a partial clog. This can happen with poor quality or we PETG. This can happened with any machine.
You can:
- use cleaner filament
- do a cold pull
- replace the nozzle.
--------------------
Chuck H
3D Printer Review Blog
RE: PETG prints got bad, PLA is fine
Thank you for the answer. However, technically, I don't understand how a partial clog impairs PETG printing but not PLA printing. Just now, a perfect PLA print is finishing. So to me that means the hot end is working OK and the nozzle is not clogged.
RE: PETG prints got bad, PLA is fine
It makes no sense for just PETG to do it unless you have wet or poor quality PETG.
Thank you for the answer. However, technically, I don't understand how a partial clog impairs PETG printing but not PLA printing. Just now, a perfect PLA print is finishing. So to me that means the hot end is working OK and the nozzle is not clogged.
--------------------
Chuck H
3D Printer Review Blog