What have you found is the best way to remove mill scale on raw metal before welding?
I have been using the cupped 40 grit and 80 grit layered sander disc on my 4" Grinder. They seam to plug up and not be very effective. I have tried various brands and one does not stand up any better than another.
I have tried using actual grinder discs. Using a course stone leaves little grooves on the metal. This brings the suckage when doing body work on 16g metal. I do not want to skim coat the area with body filler and the grooves are a little too deep to use a filler type primer. When I use finer grit grinding stone, it just plugs up.
So, what have you found is the best way to remove mill scale on raw metal before welding or in the initial stages of prepping for paint?
Thanks
I have been using the cupped 40 grit and 80 grit layered sander disc on my 4" Grinder. They seam to plug up and not be very effective. I have tried various brands and one does not stand up any better than another.
I have tried using actual grinder discs. Using a course stone leaves little grooves on the metal. This brings the suckage when doing body work on 16g metal. I do not want to skim coat the area with body filler and the grooves are a little too deep to use a filler type primer. When I use finer grit grinding stone, it just plugs up.
So, what have you found is the best way to remove mill scale on raw metal before welding or in the initial stages of prepping for paint?
Thanks