I come from automotive/collision and so not too familiar with corded tools. But I'm building a roll cage out of 1.5" square steel thats pretty rusted. Need it down to metal entirely for paint. Not paying anyone to do anything. I have a m18 fuel (new one) that I like but wouldn't want anything less powerful. I just burn through 5ah batteries after like 2 4ft pieces. Before that I hade a $20 HF 4.5A one that is a fucking joke. I want a 6 or 7 inch pad (cost efficiency/small discs wear out too fast) but can always change the pad out but it'd be nice to have a guard as my 4.5 milwaukee is currently rocking a 7" pad and it sucks. Have 100+ ft to strip and then clean up any welds/cuts/etc.

I figured I want minimum 11A preferably 13-15A but am at same time not sure if weight becomes an issue and how that translates power wise to my milwaukee. About to pull the plug on a bosch gwx-whatever with the X change feature and a 13A and 6" pad because they don't make a 7" (can you buy one separate) $100 refurbished thats about my max. I've had best luck so far with 60 grit composite pads and flap discs which (grit on composite) is what always worked best on 3" die grinders for this type of stuff but am open to suggestions. Anyone else offer a quick change feature for attachments? I can't stand constantly swapping....