I'm not sure if this is the right place to ask this, but I figure with all the experienced people on this forum someone would be able to help me.
Anyways, I'm able to get my hands on some 4'' OD (3'' ID) tubes at work, spiral wound, used as the core for either rolls of paper (the shorter tube) or plastic film (the longer tube). They're pretty sturdy (can't crush them unless I actually stand on them, and even then it's not easy), and looking at them I got to wondering if they would be useful for pyrotechnics in some way. I made up a quickie page with pictures, here's the link :
I doubt I'd be using them to launch shells even if they're good for that, but I was thinking maybe mines... or, if nothing else, holders for 1.4 roman candles and such.
So, thoughts? Opinions?