subterranean wrote:yes pete bottles are perfectly safe i have used 16.9 oz and 2liters but i dont think heat shrinking is a good idea its true that they become brittle.
you will want to keep the inside clean from resadue from areosols or it will cause them to melt.(just make sure not to spray too much in) and with the rough tests i did on pressure the 16.9 start brusting at 110 and the 2 liters at around 150. and there will always be exeptions for a faulty bottle. i used duck tape and wrappped some pete bottles and it increased the amount of pressure it held .....im starting to ramble anyway i say yes they are safe for combustion use
I just wanted to point out, some people have tested the effects of duct tape for containing shrapnel and etc.. and found that it's useless. Duct tape holds about 9 psi, anyway. Placebo effect, subterranean?