You can use Anything that contains butane in it literally any deodorant is safe but different deodorants have different speed when burned wich means the slower the burn the lower the power and strength of the gun because the projectile would be propelled at a much Lower speed meanwhile those who burn fast tend to have much more strength a deodorant that gives it a decent burn are axe deodorants a weak one i would not recommend is dove deodorants a very strong spray u can use as fuel is hair spray by far much stronger than axe or dove and another tip is that once you dismantle a lighter for the pieso trigger mechanism dont throw it away u can use the butane of it as fuel and it gives out the strongest propelling than all sprays out there the problem is you can only use the lighter butane only if ur chamber is small if you have a big combustion chamber you will need spray because the lighter butane will take a lifetime to fill the chamber for a single shot hope this helps and btw u can also use 90% alcohol spray that one also is a very powerful fast burn and very consistent if not the most consistent of all in my old spud gun the alcohol spray always required 3 burst of sprays to ensure a successful shot and not jam meanwhile using other infinite sprays and lighter butane u will end up jamming a ton unless u calculate exactly whats the right amount

Alcohol

Isopropyl alcohol or 90% alcohol.

have made more than 3 already and it works fine. The thing I dislike about most of these similar videos is that they haven't installed the third tube which is the one that pumps gas into the second tube. As you can see he is pumping gas manually into the tube. That pump should be attached to the gun. And a hose from the pumps nosal going into the second tube to inject the gas. Making it sure to seal the holes you made on the tube otherwise it might not work effectively. Oh! And another thing the bigger the gas tube the more you'll have to add more gas into it. Bare in mind it is not a toy!

Да это же обычный бутан или газ для зажигалок , что одно и то же.

😂😢😮🎉

El metanol funciona

Shooting at hardwood is dangerous if power is unknown. Projectile may bounce back at you. Better to use softer wood look at penetration before using hardwood

Denatured alcohol