To tell people that conduit is a good material to build bikes with is bad advise. Some people may use it, but that does not make it ideal, or something to advise others to do casually. Professional welders avoid it at all costs. No reputable custom frame builder would ever use it or advise its use. Conduit is for the "unstressed" routing of electrical wires. Atomic Zombie has made some interesting bikes on a budget, but that still does not mean that conduit is even marginally good as a general bicycle building material for everyone to use. I would like to hear from Brad if he recommends the regular use of conduit in bicycle frames, and whether he thinks its ok for novices to weld it. Conduit is the worst material to build bikes out of, and it is never used for any kind of commercial bicycle use. A lot of those old Marty Eden bikes were made out of conduit too (remember Marty Eden? from CB.net?) his conduit bikes looked pretty good but a number of people who got frames from him had them break at the welds.
No reputable custom frame builder would ever use conduit, its a joke!
Dorian