On the subject of brake pipe tools, every now and then decent gear pops up on fleabay. I got a rothenberger pipe bender for £25
http://www.rothenberger-tool-uk-sale...ges/R24112.jpg Makes a really neat job of bends in small diameter pipes and can be used in position as you go. Never knew I needed it till I owned it for a few years and now dont know what i would do without it.
Also picked up one of these for about £50
http://www.aircraftspruce.co/catalog...parkerbead.jpg , same thing again has proved bloody handy .
Bob