Glue to PLA and PELG Parts

Hello!
How can I glue PLA and PETG pieces together? I’ve tried with cyanoacrylate but it’s very expensive and not very strong.

Methylene Chloride, called plastic weld, its a solvent bond from model shops, not sure if pipe solvent is the same. Loctite gel glue is pretty good.

I will try it.

Thanks.