A really simple way to put a bead on pipe joiners
http://www.clubcobra.com/forums/tech-tips/110097-cheap-tubing-bead-roller.html
[Edited on 10/11/11 by T66]
Been reseacrhing this myself and came across this thread too
http://www.dsmtuners.com/forums/custom-fabrication/324132-homemade-intercooler-pipe-bead-tool.html
Very similar solution, neither might last for ever but they are ideal for the home builder with custom pipes to join.
might even get a sticky out of it...
If you look further down the link there was a more robust version using a vice.
Sounds more like it, hands dont take long to get tired...
much better bead with the vice !
[Edited on 10/11/11 by T66]
few other older threads on here too under 'oyster tool'
cheers
D