Refillable Grenades

[blackrain]

I made this for those of you that want your monies worth. This is an old Idea with a modern day twist. KVA were the creators of the refillable paint grenade. Only they used a red cap and a plug at the end that sent a spray of paint. They also used some thread protector around the body so if the nade took off it could be recovered. I'll add thread protector tomorrow. Please donot ask for my supplier of check valves and syringes. He asked for me to keep it private. Enjoy.
Supplies needed:

Gorilla glue
IV one way check valve
5in 3/8OD x 1/4ID x 1/16 wall-Laytex Tubing
Cotter pin with ring
Modified 3/8 washer drilled to 31/64
Syringe for filling
IV one way check valve:


I dipped mine in water first.This will make the glue swell when it starts to bond. Smear it on the check valve. Do not get any in the hole.
Slide it in the Tubing:

First I wet the tubing at the end with a little drop of water. Then I slid in the check valve to the end of the shank edge (quit thinking dirty:ROTFL. Then with the excess that came out of the tubing end, I smeared it along the bottom of tubing.
Let it dry:

Gorilla glue will swell and cause a foaming action, this is ok. It means that it is bonding. This is great glue,it's water proof as well.
Now That it's dry:

I put a zip tie on the end. Why I don't know,maybe just over cautious. That's just me. If it bonds correctly you don't have to worry. Then I put a zip tie around the tube itself. Not to tight,just enough for it to have a little friction.
Tie on the washer:

This is what the zip tie around the tube is for. I just hold onto the cotter pin,so no worry about tying it off. Tie some nice strong string around the zip tie and washer. I would recommed drilling a whole thru the washer. In this case I didn't have to. I used some very heavy duty thread that is used in sewing military gear.
Now let's fill the grenade bladder:

Clamp off with hemostats. Screw on the syringe and start filling. I used about 6 syringe fills. Big note on filling. After the fill is in,don't let go of the syringe plunger. The check valve is still open and will force the water back into syringe. This is fine with just water,but not with paint.
All filled up and ready to throw:

Recommendation for fill:
For 8oz of water, I would use about 10 paint balls mixed in. It's really up to you. Have fun with these. You can use tags and tie them on so you know they are yours. The string holds the washer,so it can be reused. Hold onto your cotter pin. How many times these can be filled,I'm not sure. Last time I used one,I got 50 fills. I plan on introducing these at a local field. I'll probably sell them at $5 and the .25-.50 cents a refill. It keeps the kids happy. Enjoy and improve.
Later,
Blackrain

So here is a little update on this project:
Well it's been a while gathering parts, but the last one arrived yesterday. Hemostates cost alot, so I'm now testing with a catheter clamp. So far it meets my needs. I have to wait till some tubing dries then I'll use the clamp. Unless I can remember where I put the other tubing that I already had made lol. Anyway, here is a picture of the parts. It's designed to go straight to the field. The reason I'm not using hemostats is, they are used for smoking dope as well. Last thing some kid needs is to be pulled over and accused of having drug parphinallia.
Later,
Blackrain
Quick Update:
Just tested out the clamp. Works excellent. Better then hemostates


Just a quick update on the clips clamping capability:
Here's another update about the clip. It holds very well. I may just start using these on my machine too. Here you see a tube filled with 8oz of water and not one leak:

This is how one would normally be filled. The cotter pin and washer does not stop fill from flowing out, due to pressure trying to push out. For those of you who must ask,yes the clip gets removed after filling and no paint will not shoot out with the washer and cotter pin in place.

Later,
Blackrain

[SirRod]

Verry Cool...