Lawnmowerboy
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you can use either on any machine as long as you swap the polarity i think its live earth for flux cored
you can use either on any machine as long as you swap the polarity i think its live earth for flux cored
Often inside there are two binding posts that you swap the wires to change the polarity.
yes it does but lay a bead of weld or two before you buy it you can do this even with no gas its where the earth lead and power feed to the torch connect usually on like M8 studs and nuts swap these and youll be away
Davey, you can try the gasless wire in the machine as it is now, without changing over the polarity. Nothing dreadful will happen, except that the welds may not look very good, and there won't be a great deal of penetration. Some people do some rough gasless welding without needing to change polarity.
Don't forget to take a look at the wire feed roller, check it's set on the side for gasless wire, or at least check its 0.8 mm. Or if in doubt, ring the guy and ask if he was last using it for gasless or not, and if you need to change it over. Set the wire feed pressure only enough to push the wire through easily, don't go too tight or it will misshape the gasless wire.
So far as the tip goes, I'd go for the size larger, 0.9 mm tip for 0.8 mm gasless wire. If its high-quality wire and a pro gun you can get away with 0.8 on 0.8, but for the sealey I'd go up the one size to avoid sticking.
Set the power and wire speed about mid-way in the ranges, and experiment from there, preferably on something around 2-3 mm thick, just laying a few beads down. You will blow thinner metal away while experimenting with gasless.
Normal flux-cored or gasless wire looks silvery and shiny, and if you put the clean-cut end under a magnifying glass you will see the end of the flux core inside.
There's a different sort of flux-cored that is used with gas as well, but that's generally on big pro welders on heavier jobs.