I used clear silicone. It doesn't have to be clear though any silicone will work. Caulk works well also, but I like the silicone that comes in the small tubes so you don't have to open an entire tube of caulk for these small projects.
Love your work, but doesn't using the CA glue (aka..super glue) to fill the small pockets make it unsafe for food contact even if overcoating it with a food safe finish.
No. Epoxy is SUPER strong I did a test I hit epoxy and wood with a hammer 🔨 and the wood splintered long before the epoxy cracked and chipped. But I would have thought the same till then.