Hi Anselmo and dialists all, When I went back into the NASS compendiums in the search for shadow sharpeners I found that instead of an article it was mostly excerpts from this list itself, so, yes, it would be nice to have it all pulled together from the archives. There are a number of folks stories and experiences with them.
Sorry to you all, that is the second goof on my part lately. I've got to check things more carefully before responding. ( The other one was on the pinhole parallel to the surface question of John's ) Enjoy the Light! Edley. -
