I am gradually whittling it away. What began as 8.5 cwt is now a mere quarter of a ton.
With things that go through a cylindrical stage, you have to find the centre - on both sides - otherwise the finished article ends up what we in the profession call 'wonky'. The outer circle marks the widest that the leaves of the pineapple protrude, and the inner one is the only flat bit of the whole thing.
Look at the compasses/dividers. They are Georgian and still in regular use. I have and use many tools which are over 250 years old. Nothing much changes in the world of stone (aside from power tools), which is one reason why there is more mystique attached to the business than carpenters can dream of.
Also there is a perceived permanence to stone going back thousands of years, whereas all that remains of Woodhenge is a row of holes.
How many pieces of the True Cross exist, I wonder?