David Bradley Grinder | Smokstak® Antique Engine Community
May 10, 2006. #4. According to my 1938 Sears Catalog, the David Bradley 5 1/2" Small Gtrain Grinder sold for $11.50 and was shipped with one set of coarse and one set of fine burrs. They didn't list a medium set in the replacement burrs listed for $.85 a set! Says it should run at 700 to 800 rpm.
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