MIG Weld Wire for Sheet Metal Repair

Aloha All,
Just bought a 11 LB roll of ESAB .025 Easy Grind mig wire to weld in 20 Gauge patch panels in the roof, at rain gutters, of my trusty, rusty 94 jeep cherokee.
Laying wire using C25.

ESAB EG IS easier to grind down small "weld dots" and does grind easier than the ER70S-6 .030" solid Radnor wire from the local Airgas Store.
Grinding welds still gets red hot and looks like I'm peeling molten metal away, rather than just grinding it down.
In fact, the ER70S-6 Radnor wire I got from the local Airgas DLR here on Oahu, HI is tough! But a real bit*h to grind down... which is why I opted to spring for the $90 spool of ESAB Easy Grind. Yes $90... everything cost way more here... add scarcity and shipping ... and whoaa Nelly! HOW MUCH? Filling a dive tank of gas... heart attack! oh well, where you gonna go?

Still dialing in the Miller 211 on 120V to get the flattest weld possible, to minimize grinding...
so far, 30 on the amp and wire speed scales are working the best.
Did burn through if I lingered too long... Will see how grinding the ESAB EG goes on the fill metal in my burn throughs and endless row on mig dots.
Any and all brilliant suggestions, settings for this box most welcome=>

Only have a few days after work, maybe the long weekend if I get lucky, to fill the roof holes and driver side tailgate post... the landlords let me use their carport while they're on vacation, bless their hearts, and I'm scrambling to fill the voids, before I'm back working in the exposed driveway.
Beating the 20 GA into a crude facsimile with hammers, a small vise and vise grips is an even bigger challenge.
Followed by light weight bondo, no doubt ;->

The rusted out floor pan on the passenger side from cooking by the exhaust system, is another project.

Bottom line: the ESAB Easy Grind .025" is an improvement over the standard .030 mig wire for sheet metal... worth the extra cost, in my book.

Now, off to try to trim and spark in one more small patch panel before I have to generate my 2 hours of construction inspection reports for the day.

Big MAHALO, (thanks) to all for your help.
Mike

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