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A friend ended up with a spool of PET-G filament that he didn't want, so we made a bit of a trade and I got the spool to try out.
I printed a second spool holder support so I could really compare the two materials on the exact same print.
It took some work to get the PET-G to print... The default PET-G temps in Cura were different from what the spool said, so I created a custom profile for the filament in Cura - I had some problems with changing the temps of the print as it was printing, getting an error about heating failing. Even after using the custom profile, the filament was not adhering well to the bed, but managed to stick enough to make the print.
If you look closely (open picture in new tab) you can see that the infill is really "messy".
This was the "hard" part of this print - bridging this gap...
The PET-G is on the bottom and did slightly worse, but still OK
PET-G on the left, PLA on the right.
You can see that the PET-G was having bed adhesion problems - the first layer is pretty messy, but after that it actually seemed to do a bit better than the PLA on the layers curling up.
The PET-G is slightly whiter (the PLA is yellower and perhaps less opaque - lets light through a bit more)
Interesting artifacts on the PET-G (top)
PET-G top, PLA bottom
PLA on the left 1.04g,
PET-G on the right 1.44g
The PET-G feels more solid. When I dropped them each on the granite countertop, the PLA part goes "clink" while the PET-G part goes "thunk".
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