No problem! What I did was to take some bad cams and practice on them. (old bent ones, or ones for engines that will never run again!) Getting the weld to stick is the main problem I had. I cranked up our wire welder to the max setting and sped the wire up a bit to make the wire "build up" but need the heat for penetration. Not sure if a 110 welder would work. We have a Miller millermatic 250 wire welder with shielding gas, it is a 220 welder.
Good luck
Paul