Hi, i've a clarke pro90 mig which i'm begining to get the hang of. I'm using it for a bike engine mini conversion & its ideal for the bodywork. My question is that i'm going to need something capable of welding suspension components & bits of cage possibly more that 3mm thick. I don't really have the money to spend on a new mig, would an arc welder be suitable? what are their drawbacks? any other ideas? your help would be greatly appreciated!