> On Apr 6, 2021, at 4:50 AM, Richard Wilson  wrote:
> 
> We are much more picky these days - absolutely flat stones - micro bevels -
accuracy to thousandths - but it wasn’t always so, and empires were buiilt with
hollow stones and tools that were just sharp enough.


Well said Richard - think of all the bench planes that have undergone sole
flatenning when the last guy made a lviing with them as they were

Ed Minch