Easy method of cleaning up the back-side of a plasma-cut sign.
Plasma-cutting or Flame-cutting leaves a little dross (sometimes called slag), even under ideal settings & conditions. Many methods of removing dross have been tried, but this is what works best for me. I use a 4" Angle Grinder with a 4-1/2" AVOS® Backing Pad & Abrasive Disc (36-Grit). It's very quick, as the video will show.

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