Metal munching moon mice needed. - Help with cutting a light steel plate over concrete.
September 25, 2012 11:47 AM Subscribe
Efficient cutting of steel plate, backed with concrete-like material? Ideas?
posted by FauxScot to technology (10 answers total)
I have a small (800 pound (350 kg) safe with no residual, historic, or functional value that I am attempting to incorporate into a small sculpture. Dates from the mid-late 1800s.
The structure of the safe (as is the case with most of these) is that it ISN'T solid steel, but instead is steel plate encasing a semi-ceramic/concrete-like interior compound that is supposed to release water on being immolated. (This is to protect the safe contents in a fire. Clever Victorians.)
I have partially destroyed it, but am looking for the best way to remove most of the plate. In the end, all I want remaining is the corner elements (in steel) and none of the concrete material. I have tried abrasive cutting wheels on a 4" angle grinder and a saws-all. the grinder is too slow, and the saws all is fast but the short metal blades only last a few minutes as they are dulled by the ceramic.
I don't have recent experience with ox-acetalene cutting and NO experience with plasma cutters, but wonder if either would be better than the saws-all? Will either work, considering that the plate is backed by what is essentially one hell of a thermal sink. Does a plasma cutter care about such things?
Any advice greatly appreciated. It's only art, so not a big deal, but a small amount of order will occur as a result of this.