Tim,
I keep poring over the photos and having conversations about the study with other SRPers who are doctoral level researchers. We all agree that you've done a major service here and want to encourage you to continue with the study. Personally, I'd like to see photos comparing strops - natural leathers, diamond coated, and CrO coated and linen. I'd volunteer my precious Pike hanging strop for such a test!

The 400+ year data set of barbers using coticules and natural leather strops is compelling but empirical! Your study has started to shed light on that data set. We need to continue that work and I'm happy to be part of it as I'm always in search of . . . the perfect edge.