I’m looking for some advice on how to bond a post-processed resin printed piece to a large PLA print. I assume my options are either superglue or maybe brushing resin onto the PLA, attaching the resin print, and hitting it with a UV light?
Is there a better way? Thanks!
I understand that, acetone attacks a lot of plastics, I’ve seen mixed comments about it with resin prints for smoothing, I don’t see the harm with trying it on scrap material, at worst it doesn’t work.
CA glue though should work, heat won’t so that’s my bad. Op’s original idea of brushing on resin and curing it sounded possible to me.
There’s also mechanical solutions, if possible op could change their parts to accept a screw, into plastic is plenty strong. or they could build in some sort of snap fit solution but both of those would require design changes and I assume op already has their parts printed.
The problem with brushing on resin is actually not that great because resin for printers will need to be cured. Unless that material is letting the UV light through, only the outer parts will get cured and hold onto the models but when you open it up again the whole middle part would be liquid resin again which stinks and is toxic.
I had this misunderstanding for quite a while myself and though that I can just weld resin party with resin together until I did that with a larger piece and it broke quite easily and seeing that the whole inside wasn’t even touched at all by the UV light.
Hence also why you should shine some UV light into a hollowed model to fully cure it.
CA/superglue should do fine if applied correctly.