Honestly I had never done it before but saw a brief note of it in one of my books and had a handful of old walnuts sitting on my counter for months,...
That's a good line of reasoning. The edge being that straight and sharp it has to be close to the film to be "in focus". Everything is painted matted...
I was at a friend's house printing on Lodima with a 45w bulb. Print times were ~10 seconds with EV 9 showing on the baseboard. I can't remember what...