Rebo,

"because the manual or instructions, probably translated wrong from Chinese, says you need it, does not mean it is correct.

What machine do you own that says it is required?"

It's not really a case of "...says I need it....."

I have a cheap little Cdn Tire branded (probably Lincoln) flux core welder that I've been using .035 wire with to make frame modifications, engine mounts, etc for my 54 F100 rod. I now want to do some body work mods - welding patch panels, etc. Most welding books, etc say you need a smaller guage wire like .025 for the thinner sheet metal and they also recommend a softer wire that is apparently easier to grind, hence my query.

So.........?