QUOTE(jimkelly @ Aug 22 2013, 04:48 AM)
guys - thank you all
think I better get me some- easy grind - .023 wire
scottyb wrote "Thermodynamics = firepower // ESAB = spoolarc"
no sense practicing on thicknesses I have no immediate intention to be working with
http://www.914world.com/bbs2/index.php?sho...p;hl=easy+Grindjim
Easy Grind is the cats ass( but a tad pricy).You can even use it for structural welds.....it is still tougher than the base metal.....but for thicker material I do use .035 "normal" wire.
Most body/chassis material is made from cold form steel.....35,000 psi + yield strength easy grind is close to that and grinds closer to the same rate....it's harder because it cools quicker than the base steel when it's rolled.
"Normal" wire is around 70,000 yield as is hot rolled body/chassis material and with the .035 you get better penetration on thicker material....strenght is good on your roll cage,
......but sux for grinding on body work.
All these yield strengths are approximates off the top of my haid, BTW. You have to read the "certs" of the melt (heat lot) to get actuals.....the ASTM ranges are fairly wide. A Ryerson Data Book is a good thing to have around.
I'm near sighted but even then I have to take off my glasses and get my haid up reeel close the the "puddle" to see it clearly.....I'm talkin' 3-4 inches. Auto darken hoods are the greatest thing since sliced bread......and are now pretty cheap.
I have no problem running downhand (pull) on body work, but always up hand (push) on structural stuff.
I found that the "feeds, speeds, & amperage on chart of Gary's 120V Miller
was spot on for .025 easy grind.....don't remember for .035....didn't use it as much but it's a good place to start, IIRC.
Like everything else, practice, practice, pra.....you have the idea.....and cleanliness is next to godliness.