been around welding,but never had the desire or need to try myself. thought i might give it a go. dont want to spend alot,and then never use it..found a unit that might fit my bill. its a 40-100amp 110volt air cooled arc welder,cost under 100 bucks. but dont want to waste money,if it not going to do what i want., is it going to weld mild steel? like bike frames. thanks for your input.