Maybe an AC fluxcore wire may be available that we don't know about? KK USAF 62-66ĪC has no polarity as it is alternating back and forth at the rate of 60 hertz so you can not set the polarity even if you tried. I like the picture of the tip on your SP-135 I may be able to tweek the present set up to work satisfactorily. Thanks for taking the time to help this SC understand what's going on. While setting up the HB with sold wire for doing thinner sheet metal 24 gauge or similar as the Jobsmart for me, just doesn't do sheet. Just purchased a new Hobart 140 and really wanted to keep the jobsmart to weld thicker plates. ![]() Where as your lincoln SP - 135 will do what you want to. Also, as far as I can determine the polarity is set on the Jobsmart. Your posting has serve to clear the AC DC issue. With that said when I purchased the Jobsmart 135 I had no idea, these prototypes were designed for AC to me, what the hay, a welder is a welder. I watched a few Harbor Freight videos using their FLUXcore to weld rather thick steel plates together. Please don't take this this the wrong way. Which I have! OK, with that said an as you pointed out it does work somewhat. It was suggested to use fluxcore wire that is available. All I was able to determine is that it is an AC output machine as well as several other fluxcore, low end welders, harbor freight, etc. Not sure what part of the Buffalo I was talking to. I contacted Jobsmart - They are full of selling a lot of Buffalo equipment. It was probably yours but I was unable to find it until you reposted it. Read a reply to this matter a week or so ago that was posted to this Forum. Glad that you took the time to explain & post the requirements necessary to weld with the mig & fluxcore. I have even used Teflon tape to protect the gas nozzle threads when I could not conveniently find the rubber tip. If I ambitious I have a rubber tip I slide on there too to protect gas nozzle threads, but it is not required. My little Lincoln SP-135 mig (115 volt mig), I simply take the gas nozzle off to run fluxcore (and of course switch the polarity). If you dead set on keeping it, well what works the best on it may be totally different than what most people use on their DC output machines. There are other cheap alternatives to be had in 115 volt wire feeders that output the proper DC type voltage but they will cost more than the $99 to $150 that this level of doorstop sells for. Not saying it will not melt some metal together but it will never weld well. ![]() (Read directions on any wire you purchase to put in that welder it will say DC only). That said, there is not a fluxcore welding wire made designed to work with AC output in a wirefeeder as again it is a DC only process by nature. Nothing wrong with an AC output on a stick welder as there are welding rods designed to work with AC output in stick. I believe if you look at the output sticker on your welder you will likely see it is an AC output machine. ![]() Reason: Mig welding (with gas) or fluxcore welding (without gas) are both DC only processes. My first recommendation would be if you just bought this thing is to take it back for a refund. Thank you very much for taking the time to share your thoughts about this. If more information is needed let me know and I'll get it out here to you. Would appreciate very much any input concerning this matter. Perhaps some one here has the Hobart with the gasless flux core nozzle they use. would like to present this matter to Our Forum to share your thoughts concerning this! I like the Jobsmart and think that by adapting the nozzle may be more suitable, as long as I don't touch the contact tip, that would come close to sticking out from the nozzle, to the work. this appears to be shorter and the tip looks close to protruding from nozzle somewhat? Have a small machine shop that I could possibly construct something very similar out of brass or copper for that purpose? AS Jobsmart probably doesn't offer any adapters. Its becoming more difficult for this Senior C to see the end of the wire because the nozzle blocks the view? Hobart offers an optional gasless flux core tip for this application. What is the preferred distance for the length of wire to be exposed from the tip to the work piece to provide satisfactory welds.
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