Removing mill scale

[Mach1]

What do you guys like to use, 36 grit flap disc, 3m bristle wheel (roloc), hard wheel?

[jw33]

I use a wire wheel with a cordless drill on high and acetone.

[Mach1]

I use a wire wheel with a cordless drill on high and acetone.

That sounds quite time consuming, how many passes before it knocks off the scale? I am hearing good things about these norton wheels too

[Blue88Coupe]

What do you guys like to use, 36 grit flap disc, 3m bristle wheel (roloc), hard wheel?

a flap wheel but usually not that low of a grit

[jw33]

I only worry about the small section that I am welding to get it that clean. The rest of the part might get a blast of brake cleaner and a Scotch brite pad rub down if it is bad enough. All the tubing I've had to mess with wasn't really that bad and still looks fine under a good coat of spray paint.

[Sean88gt]

What size/type of material (angle, beam, flat, etc) are you working with?

[Mach1]

What size/type of material (angle, beam, flat, etc) are you working with?

flat plate

[Matt]

I prefer green grinding wheels.

[Sean88gt]

You can use muriatic acid, then hit it with a wire cup brush/grinder.

[Matt]

hydrochloric or muriatic acid is in the pickling of steel.

[Baron Von Crowder]

torch and a wire brush.