I have been reading just about every post on this subject and I think most everybody cuts their own with a sharp knife or razor blade. For all those fisherman who have wives that scrapbook, see if they have a "Cricut" or something similar. It is basically a small plotter with a micro blade for the print head. It will cut just about any pattern that is available. It can cut very thick material if you have the larger blade. There are several computer programs that can control the "Cricut" and cut any stencil that you can think of. I have used it to cut gills, fins and scale patterns out of mylar, plastic film and transparencies. I am still experimenting with creating different scale patterns combined with the right materials, but the gills and fins turn out just fine. The programs that I use to cut the stencils are "Make the Cut" and "Inkscape". These are just the ones that I use. There are others that are available, but I have not tried them.
Anyways, if anyone has a stencil they want to try, but have not been able to cut out with good results, give me a holler and see what can be done.
Kevin