the real problem with a plasma cutter is the tapered cut, 3.5 to 5 degree taper from top to bottom. not noticeable on sheet steel but o damn! look at that on 3mm steel plate.there are hi def plasma cutters that minimize this natural tendancy(somewhat), but the folks on this site take their measuring real serious.... you could cut then grind up to the top edge on the outside. the decision on this is yours alone to make. only you will be affected either + or- by the choice. measure many times $cut once$
"If you dont go there,you will never know there......Thus starts the voyage of discovery." a redneckmacguiverism c(;{