Hi every one i bought a second hand SIP AUTOPLUS 150 and have been teaching my self to weld with just the help of this site. and i have managed to weld my exaust on my car after lots of practice.. (i had never touched a welder before) but the problem i have is that i have no idea what all the dials do on the welder just left it as when i got it. i have worked out the on and off but it has one and two on the off dial i just use the one at the moment. i would like to know what they do. i have worked out the wire speed (clever aint i lol) please if someone has got one of these welders i would love to find out what it is capable of doing or getting a copy of the manual (sip have not got one available) thank you for reading,,,/.