[H. L. Chauvin]

I still use a vintage hand crank, very fine, grinding wheel from the 1920's - 1930's used by my Dad years ago; and I can very accurately grind and very quickly adjust lengths of Model A valves or any other valves for original non-adjustable tappets.

Similarly to the Gentleman's Reply #6:

A. Make a wood, double "vee" box valve holder to accurately hold valve(s) "parallel" to the top of the horizontal work bench.

B. Vees can be easily cut out of pieces 3/16" Luan plywood & securely attached front and rear to a wood block below.

C. Vee box is securely clamped to workbench while accurately aligning valve(s) at 90 degrees to the side surface of the grinding wheel.

D. Remove very little valve metal until one gets experience as to how much metal is actually being removed.

Hope this helps.