Hello and Welcome Thom ! <img src="/ubbthreads/images/graemlins/smile.gif" alt="" /> Good to see you here, though the BOWIE should be first! <img src="/ubbthreads/images/graemlins/rolleyes.gif" alt="" /> Your knowledge of metallurgy will be greatly appreciated here. <img src="/ubbthreads/images/graemlins/thumbup.gif" alt="" />