1st Mod - 18650 Pipe Bomb

[sizemore2000]

The important thing is that it works! I used a 3/4 inch brass pipe, 2 end caps (which I thought were brass, turned out they weren't), a n/o switch, some wire scrapped out of an old computer, epoxy, a 510 battery connector, couple of springs off of my sons old toys, and a little plastic off an old skoal can.

1. The caps not being brass kinda messed me up, as I had to solder the negative spring to the brass pipe. I'll probably see if I can find some copper or brass caps to replace these with. This way the battery connector won't need a wire coming down to the pipe.....There is one plus though. I now have a rubber band holding the negative cable to the pipe, and when I'm done vaping, I can pull the negative wire out and I won't have an accidental activation.

2. I put some plastic under the positive spring in the top cap, which I probably didn't need since the cap is not grounded, but if it was, I would think I need the plastic. I run the wire to the switch, and from the switch to the positive post on the battery connector

It's not pretty, but for my first one, I was just glad it worked.
It does hit great!!

 

[WillyB]

Those certainly look like brass end caps. Why do you think they aren't?

You could also go with the 'custom' brass end caps like the Saber Touch uses.

Shop Watts 3/4" Garden Hose Cap at Lowes.com

Jones Stephens Corp. G20-055 Garden Hose Cap | Deerso


PS... put on a shirt.

 

[sizemore2000]

I don't know WillyB. Thanks for the tip with the caps! I think lowes sells those in a pipe thread instead of water hose thread.

Next picture, I'll wear my shirt.

 

[Connman]

2. I put some plastic under the positive spring in the top cap, which I probably didn't need since the cap is not grounded, but if it was, I would think I need the plastic. I run the wire to the switch, and from the switch to the positive post on the battery connector

Good job on a working mod but I have a few concerns on safety,

Why do you think it`s not grounded? The threaded cap going onto the pipe should make a great ground. Glad you have the plastic there or you would have a potential pipe bomb possibly rigged to blow.
And be sure you have vent holes in that larger then just for the wires to stick out. I do like your mod just wanted to make sure it was safe other then just relying on the Battery pcb.

 

[sizemore2000]

Thanks Conman. I wondered why it wasn't grounding too.

update: I've just found that the top cap is grounding.
I guess the glue holding the battery connector down is possibly causing it not to ground. I'll see if I can rework that a little. Thanks for the note on venting. I'll make sure it's vented, and I use a protected battery.

update: I got it working without a wire to the negative now! Hooray!

Maybe now I'll try a box mod!