Quote Originally Posted by MarkL View Post
That's true Gerald. Have you had good luck doing this? I've seen grain negs for sandwiching in the carrier and full print size contact screens, which might be harder to make well.
Grain masks work best with 35 mm negaqtives. With contact prints from LF negatives it would be hard to see any grain even if you were using a very grainy film. So the oeverall effect strikes me as rather false.

By making your own masks you are not limited to grain, for example you can use wood grain, a closeup of concrete or just about anything with a repetative pattern. I used a 35 mm mask generated from a very uniform sample of concrete and the print worked out very well.