First print of PET+ from @MadeSolid using 240C on the extruders, 100C on the bed and a raft. Next print is leaving off the raft. Better definition than the ABS part, started a bit hotter on the hot end (245C) but got a lot of goo so backed it off to 240C. The raft adheres a bit too well to the part. Interesting ‘shine’ effect which isn’t there with ABS either. Surfaces were good and the small overhang on the edges had no droop at all. Now to find something a bit more challenging for it to render.
So the non-raft version has a much better back surface (smooth and shiny) but it was quite a bit harder to pop off the capton tape. Not freeze spray hard, just wait until the bed was much much cooler and then pop it off with a plastic wedgie hard.
I tried pet+ but most people I read are printing it much hotter. Like 270C. At 240 it gooed up for me too. I had better results hotter but I didn’t want to wear out my hot end that has a Teflon tube in it.
@Dennis_Muhlestein
interesting. If I set my extruder temp to 270 the filament drips out the end (fully melted). I also don’t have a ‘down fan’ as some folks have, I’ve got an email in to the madesolid folks for some specific melting/eutectic points for this material. I did a calibration check on my hot end and verified that the temperature readback is within +/1 1 degree C so I’m pretty sure the temps are correct.
Keep us posted what they say. I’m interested in pet for some applications but haven’t got a good process yet.