(My bolding)If you have enough power, id say yes... maybe... I have lit matches under water, but they were covered with a piece of scotch tape.
The black powder used in fuze will stay lit under water, but initiating im not sure..The fact that it gets wet before you add heat may be a problem, but it doesnt hurt to try.
(My bolding)
Yes, it will work fine as long as the fuse is kept dry with something that will let laser light though.
(My bolding)
Yes, it will work fine as long as the fuse is kept dry with something that will let laser light though.
Waterproof fuse pretty much has to be burning before it goes in the water, otherwise the water will soak in the powder core and trash it. So maybe, but probably hard to do.