Ok first, you do not have to change the liner to run flux core. If you look at the inside of the flip up cover (where you put the wire on) it should have a decal showing the proper polarity for the type of wire you are running. .025-.035 wire should be used, just make sure you have the same size contact tip screwed in to the torch head that matches the wire you are using. If you are going to use sheilding gas, and you are welding outside in the breeze, then you will probably have to increase the flow at the regulator to compensate for the draft. I usually set it at about 10cfh and gradually increase to where I need it. Depending on what size bottle you are using, it can get expensive if you are running with more gas than you need. Most little bottles hold about 20-30 cubic feet. So if you run 20-30 cfh(cubic feet per hour), your bottle is only going to last about an hour. Also remember that the Miller 135 has only a 20-30% duty cycle, which means you can only weld 2-3 minutes out of every ten. Exceeding the duty cycle will overheat the rectifier/transformer in the machine and shorten it's useful life. Anytime you weld on rust, or paint, you are going to get weld contamination-flux core or solid. Flux core will probably show you a better weld through rust. Best way is to grind away the rusty areas, exposing the good metal. That way you get a good stong weld to the base metal. /forums/images/graemlins/thumb.gif /forums/images/graemlins/thumb.gif /forums/images/graemlins/deal.gif /forums/images/graemlins/grin.gif
