When they show the master stonemason of the Cathedral of here or there, they show someone chiselling away in their workshop (^example). The only modern equipment, TV and sound recording gear excepted, are protective glasses and breathing masks. Oh, and a vanadium steel chisel, and a plastic hammer, heating, ear plugs, good lighting conditions, windows and roofs, a kettle for tea and a full belly.
This is not the authentic “just like they did it 500 years ago” experience, and why should it?
But, if authenticity of the manufacture process isn’t required, I can’t help wondering why they do not 3D laser-scan a sample stone, provide the exact measurements of the replacement stone, press Load and Go on a CNC-controlled router and be done with it.
Even Julia could do it!
The resulting stone may look at little too smooth, too exact, too machine-made, but at 27 feet above ground, seriously, who cares? A smoother surface will only make it last longer.
- Advanced 3D Laser Scanning/CAD Tools Help Bring High Tech Violin and Cello Tailpieces to Market (prweb.com)
- 3D scanners to cut crash closures (bbc.co.uk)
- The Stones. (multigraphias.wordpress.com)