anyone know add materials can make resin model more tough? it is easily break the thin resin model like the picture.

Use a tough resin like the one from formlabs

thank you! i s formlabs resin tough enough? won’t break if press it?

I don’t know enough about your application or design to be able to give a yes or no to that. It’s a stronger material for sure if you have to use SLA. Your other option would be to use high strength fdm materials or look at sls nylon