How to Make Paintball Guns
Unless you have a machine shop and thousands to spend on R&D as well as an endless supply of steel and aluminum, chances are you will have a very difficult time making your own paintball gun. However, some DIY's have been able to build imitation paintball guns with PVC piping, which I do NOT recommend. First of all, PVC piping is not tested for pressure, and in no way should be pressurized. Sure people use PVC piping for potato and spud guns, but they're just idiots. The matter of fact is, there is no "safe" substition for a real paintball gun.
If you insist on building a paintball gun, or want to know how to make your own paintball gun that has a lesser chance of blowing shrapnel in your face, then take a look at the two following homemeade paintball gun designs that I believe are the safest you can make at home:
I've taken a look at some of the other homemade paintball guns out there, and about 99% of them were made by engineers with the right tools. I'm amazed at how many are using PVC piping in their homemade paintball guns, apparently they aren't the smartest engineers out there... so keep it safe and stick to the simple designs above. If the homemade paintball guns are too simple for you, then perhaps you should talk to an engineer and see if you can get some help, because making a paintball gun isn't exactly child's play.
Added by Reed · Filed Under Browse, Homemade, How To Make 
I don’t appreciate your comments about people who use spud guns with PVC pipes are idiots. As a matter of fact, with combustion guns, the amount of force cannot be attained to break the PVC, because then the air-to-combustible ratio in the chamber would be too high to even light. The only time they will ever blow is when someone uses a pure chemical, and that, my friend, is idiocy.
i loveeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee this
wait you think that the two liter bottle that hasnt even been rated for water pressure is safer then pvc pipe that if you are responsible and only presuize it to 80 psi is completely safe unless you drop it from a tree onto concrete or throw it down on concrete. you thoughts are flawed.
When I wrote this I was talking about making paintball guns out of pvc piping, and attaching air sources to them (like tanks or compressors @ pressures worthy for a paintball gun), which I should have been more clear about.
I am aware that combustion pvc canons are relatively safe, as I have written a post about a combustion paintball gun here – http://www.pain4glory.com/holy-flaming-paintballs-a-combustion-paintball-gun/. On it I actually recommend making the combustion pvc paintball gun over any air powered version.
However, if I were to make an air gun, I would much rather have a 2 liter bottle explode around me than a pvc pipe. That my friend, is not a flawed thought.
Very Cool !!!
Guys, my english is not the better, but the images talks a lot. The diagram of the air/balls valve is very clear, but I can’t find, in the diagram, the load ammunition system and anything like the trigger or shot command.
Can you help me to find this ? It’s in another link ?
Thanks so much,
Paulo
Sorta concerned now. If I were to make a gun such as this one, would I need to be concerned with an explosion?
http://www.youtube.com/user/zenku41#p/u/0/abqso9XMmGs
The boy uses PVC and a coke bottle with a hand-held pump.
Sorta concerned now. If I were to make a gun such as this one, would I need to be concerned with an explosion?
http://www.youtube.com/user/zenku41#p/u/0/abqso9XMmGs
http://www.youtube.com/user/zenku41#p/u/0/abqso9XMmGs
The boy uses PVC and a coke bottle with a hand-held pump.