After several weeks of design, trial and tribulations, the thumb wheel in stainless steel is finally complete. New designs and ideas are always time consuming.
This picture shows the thumb wheel inverted and assembled with the floating spherical washer (the washer does not appear to be central on the photo as it is floating). This works with the matching spherical depression in the underside of the thumb wheel like a ball and socket; evenly spreading the load over its area, helping to eliminate any lateral movement on the blade as you tighten down on it. It also helps to evenly distribute the pressure throughout the blade bed reducing body distortion.
These are the three components making up the thumb wheel. I have changed the grip arrangement on the thumb wheel and screws. I dislike the fact that a lot of knurls fill up with dirt. Aesthetically I find this method, though labour intensive, is more pleasing and feels comfortable on the thumb/fingers.
I would like to emphasise that, as always, all my components are hand made, in house.