I've been thinking about print-in-place joints, and playing with my new multi-head printer.

Has anyone been playing around with making one half of a joint from PLA and the other from PETG to get snugger PIP joints? Seems like that would be a good way to get real right tolerances without bonding.

I did a casual search and I couldn't find anyone talking about it.

I think the interface will be difficult to print. If the underside is smooth, the non sticking material might not stay in place. If the underside is rough ... well then you have a joint with at least one rough spot in it's rotation.
Thats just from thinking about my experience with using pla with petg supports (and vice versa) so it may be better than I expect.
Depending on the usecase, I think it might work.

But I think it's easier to print a joint in place from a single material and then "snap" it so it moves. Or design something where you print the parts seperately and then assemble.

If you print really, really slow, I think it could be done without too many problems.

ive done this on small parts with an AMS and it works well for snug joints, except on a single-nozzle setup the contamination weakened the part too much. if you have multiple nozzles, this is a great idea IMO

That's what I'm thinking, wonder if I can isolate joints themselves in the slicer to just show down for those parts