JB Weld, but fear not, I was able to keep the leads out of it at least enough that it doesn't interfere (2 of the 3 are bound for grounded sinks). The other was most important, sits on a rectified mains negative side bonded sink... I gave that one extra attention to keep it out of trouble hehe (in the pic, the one on the far right)
All that said, using "authentic" tabs might have been more trouble than its worth for most... I needed something small, flat, and with a suitable hole already in it, then it hit me lol Dead MOSFETs! Haha
The casing pops off with relative ease and cleans up rather easily... the die on the tab that actually makes the transistor up, not so much lol Lots of fiddling only to end up with a somewhat rough and deformed surface on the mount side.
If I were to do it again, I might do it differently, but figured why not, it should work and they add a little spunk to an already spunky project lol