If you want to continue welding buy a cheap gas mig welder they are good for up to 1/8th inch in a single pass over 1/8th use multiple passes, not recommended for the very thin bicycle tubing. A mig welder is easy to learn easy to start the wire doesn't stick and a gas mig makes a pretty clean weld. you can get flux core wire but it is does not leave a clean weld. When welding and the wire feed sounds like a buzzing bee you pretty much have it dialed in.