Originally founded in the very early 1940's as Duro Manufacturing Co. (not to be confused with Duro Metal Products Co., manufacturers of woodworking machinery), the company changed its name to Benchmaster Manufacturing Co. in 1943 and moved to Gardena, CA. They manufactured primarily punch presses but also milling machines and die filers. The company remains in business as of 2023.
Information Sources
- There is a brief company profile on this manufacturer at http://www.lathes.co.uk/duro/
- From a 1949 issue of Die Castings.
DIE FILER HAS VARIABLE STROKE LENGTH A new die filer is being introduced by Benchmaster Mfg. Company, Los Angeles, California. The filer uses either 8 inch or 14 inch shank files. The stroke length is variable from 3 16" to 34"...
- We have seen a 1973 trade journal that mentioned the "Diamond Machine Tool Div. of Benchmaster Mfg. Co."
- A 1981 catalog for Multi-Max stamping presses is from Benchmaster Products Division of Standun Inc., Rancho Dominguez, CA. A 1952 patent for the presses was assigned to Diamond Machine Tool Co. of Los Angeles.