Jacob
What goes around comes around.
Good idea.In The Village Carpenter by Walter Rose they were advised to use a stone narrower than blade they were honing so the stone dished end to end but stayed flat side to side.
And cheaper stone. The Odate 3000 year miracle thing went same way - they went on to make cheaper "half plates" and wrote pages about it. Still not much interest. Probably collectable if you find one on ebay?