can’t you buy something shorter than 10ft long!!!!
People doing this are also doing these things:
Entries
This is pretty easy. Buy a 10 foot (3 meters and somthing) piece of steel pipe from a muffler shop, you can have them weld a cap on one end, and drill a small hole, 1/4 inch or so, in the same end, 4 or 5 inches up from the cap. Jam the spud in the open end, (can be shorter then 10 ft of course). Lots of different types of fuels you can use, acetyline and oxy from a torch works very well, but you can use lighter fluid, less bang, but still works… touch off the small hole in the capped end, and BANG !!!!
BE CAREFUL WITH THIS STUFF
