Picture of Make Your Own Nerf Gun, FROM SCRATCH!
Hey, this is my second good instructable so I am still kind of new to the whole instructable thing. Before we get started, I want to promote and give thanks to the video that taught me how to do it. I acctually forgot to take pictures in the making, but its pretty simple so you wont need that much instruction. I will give little tips and solutions that the guy didn't say, so this isn't just a blunt copy.
Here's the link:

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Step 1: What you need

It doesn't take or cost much, but here is the crap you need.
2 feet 1/2 inch pvc (must be 1/2 inch to fire well!!!!)
1/2 inch plastic pvc ball valve
ball valve
basket ball pump/tube
2L bottle
gorilla glue
duct tape
pvc cemet

can be 5 to 20 dollars, depending on the quality, and amount

Step 2: Pvc stuff

Picture of Pvc stuff
Cut a piece of pvc about 5 cm. File down one end so its a lot thinner. Connect that to the 2L bottle (make sure its empty). Connect the non-filed end into one end of the ball valve. Put 6 to 18 inches of pvc to the other end of the ball valve. Use pvc cement to secure it.
I used 1 inch pvc much to my despair, and than rolled up paper to make it thinner, i do not recommend this.

Step 3: Put in the pump

Picture of Put in the pump
Put the pump hose in the bottle so it barely fits (use a drill), gorilla glue it a hell of a lot to get an airtight seal. Here is a list of things not to use for the seal:
Elmers Glue
Duct tape
Your finger

Step 4: Secure teh pump

Picture of Secure teh pump
Duct tape a dowel from the small piece of pvc you put on earlier to the pump, this will hopefully, if done right, secure it.

Step 5: Fire!!!!!

Picture of Fire!!!!!
Test it out! Pump it up when the valve is closed and open the valve!
bgepp14 years ago
This is a great nerf gun! BTW - It's hard to tell the range in the video. How far does this shoot?
bgepp14 years ago
what about "liquid nails"? I find that to be an awesome all around glue
Fballer154 years ago
Could you make a video on how to do this? The youtube video is hard to understand....
i made mine like a week ago (not using your instructable) and it costs me about $6 but i bought ten feet of the pvc when i only used like 3-4 ft.
what size not length like how big the hole is i made one out of half in. pvc and i just need to lube the barrel of it but other than that it can power the dart but it gets a little stuck.
TSC5 years ago
Sweet!!!!!!!!! cool!!!!!!!!!!!!!!!!! 5 stars!!!!!!!!!!!! 5stars!!!!!!!!!!!!!!!!! 5stars!!!!!!!!!!!!!!!!!!!!1
heavydeath5 years ago
 nice instructable but wouldnt you be better of using a 4 pint milk bottle
nerdyrocker (author)  heavydeath5 years ago
Thanks, i actually tried to make the pipe bigger, which really helped, try that