Hi there was once a fellow making ground glass replacements under the name of Satin Snow. I understand that these are now unavailable. As a 4x5 photographer myself I have been wondering about a replacement ground glass for my 4x5 (which is a Toho) and began looking about. I was also talking with a friend of mine who does laser etching and cutting and asked if he could make one up for me as a one off. Since his gear is computer CNC type stuff it would then of course be no more trouble for him to make thousands of them (after he has made one). Which lead me to wonder if there remains a market of interest for this sort of product. So, anyone know if there is any market (world wide) for a ground glass maker?