I'm wondering what goog ways there are to inject butane into a chamber with a syringe might be. I have seen some clips of guys using screws to block injection holes and the thing of using the little tube that comes with the insides of a long nose lighter. I tried gluing in the filler valve part of a...

I've had a go at my first one and it has worked a few times thus far. Any input re: the following greatly appreciated. Ignition - Well I guess you get what you pay for. I used a $2.50 piezo lighter part. When it works it seems to make a pretty clear looking spark. Is a bigger one of these any better...

I'm hoping to insert and seal barrels in the following scenarios:
Aluminum into plastic pill bottle.
Aluminum or copper into soda or Gatorade bottle.
I don't have any jb weld lying around but I do have 5 minute epoxy, sellys kneadit, and super glue.
All repleys gratefully recieved.