Edge Retention/Rolling Test Stand

[grepper]

I did some pressure tests once with a potato.  If memory serves correctly, slicing through the potato required 3-4 pounds pressure.  I didn’t do sharpness readings, but I would surely think that slicing a bunch of potatoes would show at least some dulling of a blade.  However, potato cutting involves impact with the cutting board.

So, what’s next?  Try more weight?  At some amount of weight crushing/rolling of the edge will occur.  For example, it would be very easy to seriously change the edge with a vice.  Maybe it’s just a matter of increasing the weight until enough edge deformation occurs to provide a useable range of sharpness readings.