Do we have any carpenters in the forum? I'm still in the process of disassembling my 1972-73 Nishijin Model B for restoration. Once I got the frame removed for sanding, I used polyurethane to reseal it. I really liked the look of the wood when I was done. I want to make my custom wall case out of the same wood so that it matches. Does any know what kind of wood was used for the frame of these machines?