Watts Brothers Tool Works Explained

Watts Brothers Tool Works
Hq Location City:	Wilmerding, Pennsylvania
Hq Location Country:	United States

Watts Brothers Tool Works is a tool manufacturer located in Wilmerding, Pennsylvania. They are known for manufacturing drill bits that can drill square holes,^{[1] [2]} including blind holes, which cannot be made with other methods such as broaching. The Harry Watts square drill bit is based on a Reuleaux triangle shape. It is used together with a guide and a particular chuck to make a square hole.^{[3] [4]} Similarly, the company also manufactures drill bits for other angular holes such as pentagons and hexagons.

Notes and References

1. Web site: Drilling square holes with a Watts drill . Ragan . Sean Michael . October 6, 2009 . MAKE Magazine . February 23, 2016 .
2. Book: Watts Brothers Tool Works. How to drill square hexagon octagon pentagon holes. Wilmerding, Pa. : The Company . New York. 1950–1951.
3. Watts, Harry J.: "Drill or Boring Member", applied for November 1, 1916, granted September 25, 1917
4. Scott Smith:"Drilling Square Holes", in The Mathematics Teacher, October 1993 (Volume 86 Number 7).