Print two different matereial PETG + PLA  

RE: Print two different matereial PETG + PLA

No but I’ve tried other combined materials ( Nylon and ABS). I used the setting/profiles that suited the hottest  material. 

The printing worked fine. But the disaster was that the two materials didn’t stick together. 

They just fell apart at the join when I lifted them off the bed at the end of the print. I guess I could have glued them together but if I was going to do that I could have just printed them separately at ideal settings for each. 

RE: Print two different matereial PETG + PLA

Bonding between the two materials (PLA and PETG) is pretty horrendous, but it's possible depending on how the layers are arranged. Try with a scaled down model and then scale up if it works. The sliced gcode is pretty poor to handle this though, @nikolai-r's script is essential for multi material IMO as the temps are handled in a lot more predictable manner.

RE: Print two different matereial PETG + PLA

For people returning to this topic in the future, I did a bunch of tests with using PLA & PETG in same print and found that using different materials has a huge impact on model strength. For a typical purge volume of 250mm³ you can expect layer adhesion strength to be 1/5 of what it should be. Sadly only way to get around this is to purge crazy amounts of plastic ~2500mm³, or getting a 3D printer with at least two hotends

https://forum.prusa3d.com/forum/original-prusa-i3-mmu2s-mmu2-general-discussion-announcements-and-releases/just-how-multi-material-is-the-mmu2s/