We have all types of welders here and there all quite easy to use once set up correctly.....Heres what we do for welding alloy with a TIG Use the electrodes with the white paint on them,machine must be an AC machine, pure Argon gas,material and rods must be cleaned with prepsol and "V"ed out with an Agro carbide burr(do not use a grinding disc as this contaminates the material)I like to use the foot pedal especially on cast items as a reasonable amount of amps is needed on strike up then back it off once it starts to pool.With MIG for alloy we use pure argon again and a teflon liner in the feed line....with MIG its important that the feed line give no resistance as the wire starts binding up and it all turns to shit....The machine really needs to be cranked up on the amps to weld....i normally give it as much as i can and back the feed off until the wire almost burns back to the tip....MIG is a bit of a pain with alloy but if you dont have anything else to weld with or need to build up its ok....Once you have it setup....It welds REALLY fast