Mech warfare mech weapon

ok so im building a flamethrower type weapon and im trying to create some sort of low cost rig in which i can incorporate a butane lighter refill can for the most safety to power ratio and i was wondering if anyone had any thoughts on how to make a “linear actuator” type thing or something for basicaly dirt cheap (incase of failure resulting in explosion that destroys rig)

Um… can’t say I have put any thought into creating a working flame thrower. Spray can and lighter (wish servo to push down)?

thats basicaly what ive done but its not really directed or not enough range to it and second a spray can chances having the flame back up into the can

So just how does that happen?

i really dont know the details but once before me and some friends were doing the whole “AXE can and a lighter thing” and it blew up in one of my friends hands after only a 8 second burst