making one... i tried brazing one, but got really lazy and simply butted it together with the inevitable result that it fell apart. very quickly. my plan was to use aerosol cans, and leave tabs on the edges to do "lap" joins, which are far stronger. anyways, that was just an experiment. brazing can be a legitimate, fairly easy method to join it all up, but you gotta do it properly!
every other pipe i have made i have welded, that is, about twenty pipes. in theory its quite simple, roll some 0.8-1mm steel into shaped cones, weld together, viola! attach!
in practice its a beetch... hard to roll cones, hard to hold them in place when you tack them together, and you really need to make a few trial pipes from stiff paper to get the layout right. a LOT of work. it gets easier with practice, but still...if you aint experienced... have fun! theres a few programs you can download that will at least let you figure out the templates needed for each "segment", after having used some type of software (or plain number crunching) to figure out a good pipe design.
its the way to do it if you want real definite results.
no, i never bothered making the pipe in the aforementioned link. i did intend to, because i think its basically a joke, but i cant make head or tail of the "spreadsheet" layout. i wanted to test it against certain other pipes designed on software that does seem to produce results just so i could laugh, but yeah... anyways. thats another story. saying anything at this time is sheer conjecture
if you havent/cant weld thin steel sheet, dont have a very good MIG or TIG welder, or oxy acetylene kit(welding thin steel is freakin HARD)... and cant figure out how to cut the templates from the steel, plus have a few tools in the workshop (sheet rolls, a bender,anvil or mandrel, that sort of thing,) buy a premade pipe. theres a few links to decent ones posted on here. do not waste time getting the "banana" pipe.
