Check out this experimental write up:

http://www.spacewarptechnology.com/SWT/High%20Altitude%20Tests/TABLE_CONTNETS.htm#experiment4

It has some good stuff in it. Of note was the failed deployment with "baggie wrapped" BP. I have had similar failures on ground tests where the BP burned through the edge of the baggie resulting in incomplete combustion and a completely burned through nomex shield. Tried it several times with bad results. Another guy also had a failed deployment at balls with a surgical tubing charge. Not sure whats going on but I suspect that sometimes if the ematch isnt centered in the BP and fires, its possible to have a burn through of the charge holder and the powder burns rather than explodes. I like the idea of a rigid holder where you can center the ematch and assure this doesnt happen. I know a lot of people have successfully used the tubing method without problems, but i'm a little suspicious...

I haven't used latex glove fingers, though I've helped freinds fly rockets with them inside. No problem. I use a PVC end cap and a pyro tube. No problem with that either. 😉

Hey guys,

If any of you are my neighbors sorry about that, hehe. I'm just glad i started small with the 0.5 gram charge. It looked like such a small amount too, #4f powder on the little white paper on the scale, just dust. So, I loaded up my Little Dawg, apogee charge, with the latexd tubing method. Used about 1 1'4 of tubing with igniter in the middle, one type on each side. BOOM! That little nylon 2-56 screw didn't stand a chance, I even try to pull it apart, thinking i could break the screw with my Big muscles, hehe, no sir. So, yeah, I think i too like the surgical tubbing method, very easy.

Boom! 😈

ok, what size does most people use for the surgical tubing? 1/4, 3/8?

I use 5/16" ID x 1/2" OD

Edward

It really depends on what size charges you want to make up? I have some 3/4" tube that would not work so well in a 54mm min dia rocket.

Tony