Aftershock by Brien Foerster
Author:Brien Foerster
Language: eng
Format: azw3
ISBN: 9782721458841
Publisher: Brien Foerster
Published: 2016-06-23T04:00:00+00:00
Finely shaped vase that clearly was made on a lathe
As we see in the photo above and next page, there is a very even crease near the lip of the vase, so finely done that likely it was done with a fine diamond-tipped tool.
The diamond core drill was invented and put to practical use in 1863 by Rodolphe Leschot, a French engineer. He used it for drilling blast holes for tunneling Mount Cenis on the France-Italy border. Leschot patented the device in the United States in 1863 and it was reissued in 1869. Diamond tools for lathes were not invented until after this.
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