I'm working on a set of tables, and using 1 inch square tubing. I've cleaned the oil off of the metal, but it's still left with a sort of smoke grey color. I've used a heavy wire-brush on my 7" grinder to remove this finish, but it is real difficult. I heard a lot of comments about mill scale, and was wondering if this is this smoke grey color on the metal, or if it's just a different chemical sprayed on the tube to prevent rusting.
Any good suggestions for removal? Other than the tedious wire brushing - it sticks real well!
I'll submit the finished pictures in the projects section. I'm going to remove the color, as I want the shiny silver color, that I'm spraying with clear finish to keep from tarnishing/rusting. However, I've seen some nice metal colorings now. Might post that as a separate question under projects.
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