@NeverDie said in Waterproofing by embedding in epoxy:
@Dreded I'm not sure about the hot glue part of it, but you're right: I notice the heat shrink tubing with the glue on the inside is advertised as "marine grade". Perhaps you could simply clamp the ends when the glue is still hot to make a "marine grade" seal.
thats what I was meaning, I put the hot glue in and clamp it with a vice while it cools usually leave an extra 2" of heatshrink tubing and cut it off after the clamping to a reasonable length, I figure the vices teath leaving bumpy marks might help the seal... for something I just am putting out in the weather I often just squish it by hand depnding on the size of it.
I have made lit up pool toys this way and no issues so far with over a year of kids tossing them about.