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James Watt found the boring tool in his blacksmithing to be very difficult. "A young manufacturer named Wilkinson invented a guide for the boring tool, and machined cylinders of fifty inches diameter." -Hill, 1921

Boring Tool

James Watt found the boring tool in his blacksmithing to be very difficult. "A young manufacturer named…

The illustration showing a large boring tool for heavy work to create a cylinder with 10 inch diameter and 9.25 inch thick wall.

Large Boring Tool for Heavy Work

The illustration showing a large boring tool for heavy work to create a cylinder with 10 inch diameter…

A boring tool to create a large diameter hollow center of the cylinder.

Large Boring Tools

A boring tool to create a large diameter hollow center of the cylinder.