Printing PETG
Hello, I am printing Esun PETG 1.75 Filament and am using the default PET settings from the Prusa Slic3r software on my Original Prusa.
I am noticing width variation from top to bottom. I printed a 0.350" tall piece and the bottom is approx .010" smaller on the bottom (side which is on the heat bed) than the top of the part. It seems that the PETG is shrinking at the bottom vs top maybe?
Do you recommend the default PET settings for PET-G in the configured Slic3r software?
I included a pic so you can see the draft angle from bottom to top.
Thanks,
Dennis
P.S. I tried everything I can think of when posting my pic but your site keeps flipping the image upside down LOL
Re: Printing PETG
Hi Dennis
I have not printed with this filament, but apparently one of its advantages is "extremely low shrinkage", so I doubt that is your problem.
I think the first thing to do is to get some accurate measurements and compare them with the stl. Find out which part of the print is incorrect. It may be that the flow rate for this material needs tweaking.
The default settings as supplied are just a starting point; all printers are different, so you will need to find out what works best for you.
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…
Re: Printing PETG
Hey Peter, thanks for the quick reply.
I checked dims as I drew this myself and that's what got me thinking it might be shrinkage. The top layer is within .005" of tolerance and the bottom layer (at the heat bed) is approx .008" smaller than the top layer. Really not that bad however I was just checking if you guys had any experience with this type and what I might be doing wrong.
Drawn: 0.860"
Top: 0.855
Bottom: 0.847
Thanks again and I will post my findings if I figure this one out.
Dennis
Re: Printing PETG
Three thou it a very small difference that could possible be shrinkage. If you thicken up the first layer, does that make any difference?
Also, try printing on a raft; that will raise the first layer off the bed and may avoid the problem.
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…