I'll let you know .
this saw works at 4600 RPM ' s , I consider that fast, for copper or AL - lubricating sticks are recommended
I expect (demand) it to cut metal like butter and cut many times till dull other wise no point to another tool that does nothing new.
I remember seeing a saw like this on TV it looked like a miracle saw, the patent must have been sold off cause now i am seeing the same type of tool in more and more stores .