my question is do I need to scrape/rough up the surface of a cured epoxy to bond some more epoxy to it?
I made a part recently where I sprung an air leak well into the infusion, and in the final product that I managed to salvage quite well there are now a few bubbles along some edges. I’m wanting to fill in these bubbles with some more epoxy, a few drops here and there. So do I need to sand that particular surface to get the bonding or will the fresh epoxy bond to the cured just on its own?
Thanks.