I wonder if I can beg a little help from someone in our etch community. I have made a L.N.W.R loco coal wagon ( not finished ) with painted letters but would like to make another with cast letters. I have tried cutting these letters out of 20 thou plastic card but I cannot get the consistency over eight letters. I keep reading of people who do not want to leave any unused space around the edge of a large sheet of expensive brass or nickel. Could someone etch me a set of these LOCO letters somewhere on one of their sheets. I think they were 12" tall so will be 7 mm for my needs.