HELP!!!!!! Its been 20 years since I fired up an arc welder. I just got a Clarke 110V, 90 amp unit. I am TRYING to spot weld the laps on my galv metal siding. It is 23 gauge, and I am having a hell of a time getting a weld to stick, without burning through. Using 1/16 6011 rod. Tried going as low as 40 amps, does nothing but stick. Is there a different rod I should be using to better penetrate the galvy coating? There is no other way to put the back wall up on my shop building, so I gotta get this figured out. Basically, my neighbot put his storage building right up against the back of my shop, so all construction has to be from the inside. What a PITA. If things don't start coming together, the shop is gonna sit incomplete till spring. One more question. Will the fact that the metal is on the low side of 20 degrees(outside temp), make it more difficult to weld????? Thanks for any and all technical assistance.