Homemade airguns megathread

[XR-7]

I've never made one myself but someone I know made one hell of a potato cannon. Each time it was fired you could smell french fries.
It used the combustion chamber + Hairspray method. For a trigger he used a grill starter to create a spark in the combustion chamber.

Yep my dad has one of those too. Works about as well as the air pressure one, but much louder and quicker to load.

[Ad Bot]

[-Setro-]

My dad has an acetone-powered cannon we use.
It's a PVC pipe with a small pipe connecting to a bigger one, then a bolt at the end of the bigger one.
He sprays in acetone, puts a bottom over the small pipe, pushes in the grill lighter portion of it, which sparks the acetone, causing the gas to expand and propel the bottle.
Pretty cool.

[jonnyman5656]

My dad has an acetone-powered cannon we use.

That reminds me how the inside of the cannon i made still smells of acetone.

I also plan on using something like this and this:
https://www.menards.com/main/tools-hardware/power-tools/compressors-and-pneumatic-tools/accessories/1-8-ip-npt-male-air-tank-valves-4-pcs-box/p-1792430-c-12917.htm
https://www.menards.com/main/p-2276852-c-12605.htm
insitead of having to modify a bike inner tube

[Landmineman4000²]

Could you give a tutorial so people have some insight on how to make these
Because i'm pretty interested

[jonnyman5656]

Could you give a tutorial so people have some insight on how to make these
Because i'm pretty interested

If I were to make a tutorial it won't be too soon because I have to get more supplies from the hardware store and get a premiere  pro cc subscription so I can edit videos and export them at lower sizes that are comparable to the original source video.

[jonnyman5656]

Found a really cheap way to make any size ammo:
http://m.instructables.com/id/Pvc-AirGun-Bullets/

[Alyx Vance]

Heh when ever i try to make on like that it never works.

The air-combustionmaterial mixture is what messes up most of the time. You also have to make sure you have a good combustion chamber.

[jonnyman5656]

I have the parts for at most 4 airguns, but it is a lot of parts

[K1ng_0f_N0thing]

iirc my friend made a good one a while ago. I'll have to ask him

[jonnyman5656]

I made some of the plaster of paris ammo above, I used about a 1 to 1 ish ratio . Pretty fragile with a direct hit but easy to make.

[jonnyman5656]

Bump

[Seath45]

Me and my dad are making an M3 Lee, that we want to shoot nerf footballs. So we're making a breech loaded air gun that uses a co2 adapter and crossman's Co2 tanks.

[jonnyman5656]

Ok the plaster of paris ammo is really loving fragile, like 1 layer of cardboard fragile. So I have two ways to fix it, find a better and less leaky way of making the ammo while still be cheap or move to a new cheap ammo.

[jonnyman5656]

I have made a less leaky way of ammo but the last batch i made was still kinda mushy

[Landmineman4000²]

Show your guns in action