I have a pocket knife the same as yours mine cost 3 bucks, nice gun anyway.

Idunno, but in my science class we split water and the 2 tubes that were supposed to fill up with oxygen and hydrogen were levelling out the same as each other my science teacher said under certain conditions oxygen and hydrogen can come from the same electrode. He fixed the problem by instead of us...

Any DC power source will work, A car battery charger would be a good thing to use, something with high amps and low voltage.

You have to be carefull though I have seen oxygen and hydrogen created at the same electrode I thik using sodium hydroxide"lye" instead of salt fixs this problem.

An easier way to make hydrogen under pressure is to take a metal chamber and add some HCl (Hydrochloric Acid) and then add Aluminium or Magnesium through a screw on end cap and then screw the end cap back on and wait about 30 secs - 1 minute depending on chamber size and voila. I don't think there ...

An easier way to make hydrogen under pressure is to take a metal chamber and add some HCl (Hydrochloric Acid) and then add Aluminium or Magnesium through a screw on end cap and then screw the end cap back on and wait about 30 secs - 1 minute depending on chamber size and voila. I don't think there ...

When I first searched I didn't find much info so I had to go on my own way so I'll give you 2 basic ideas. This is fairly common purple is O-rings, There is a collar of larger pipe that slips over the barrel, and the o-rings seal it. http://i17.photobucket.com/albums/b96/littlejohny/BASICBOLT.jpg Se...

well I thought ther might be some way to cheaply make hydrogen (yes I know it ain't the safest thing), because I don't have much money. If there is some way to make compressed helium I'd like to hear it.

Most of us know that when using something lighter than air in a pneumatic cannon the projectile can achieve faster velocities ie hydrogen. But how do you obtain compressed hydrogen I doubt you can buy it so I am gathering that you have to make it some way. I want to know if it is possible to make my...

I don't have access to a lathe, And I think i'll need one if i'm making my own slide valve.

Just playin round with ideas.

Here's a quick idea for the AK

I've decided to look into other guns to replicate, Maybe it will be easier with different guns. I have run out of ideas for the m16 and nead something to think about so i'll have ago at putting some of my concepts into other guns. I like bullpup rifles so I'll be having a play around with some of th...

Put a small bead of rubber glue on the top and bottom of your barrell, Rubber glue is the stuff used to repair bike tires.

I'm not saying they are hard to make, I just finished my first T valve tonight and it works fine with no leaks. I'm just saying that doing something easier to start with will be less frustrating than trying to do something harder.

POS, Thats a bit much for a first gun I thought I could build a real good Gun on my first try but it really pays to have some basic experience,piston valves are hard to make .

I'm going to fell dumb asking this but what's a stabiliser I only thought you needed to use a regulator to keep the pressure down. I am redesigning my plans for the replica I haven't been able to think of a resonable reloading system so I will have a bolt as well untill I think of something. I am tr...