What do you do when a faithful customer comes along and asks for something that you don’t specifically offer? You find someone who does offer it and pass the customer on and wish them much success. …Well, most of the time anyway because there is not always a readily available answer for the need. This… Continue reading Lead Screw Tapper Modification Using AutoDrills
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Have you ever wondered how a professional drills holes? We are not talking about your local professional wrench, but about the manufacturers. Recently a carburetor manufacturer in Kentucky needed to drill some 1/32″ holes in brass. They already had Dumore self-feeder drill in their shop but found that access to support and new machines was… Continue reading How do the Professionals Professionals Holes for Things Like Carburetor Jets?
View detailsMATERIAL BRINELL HARDNESS Drilled Diameter With Suggested Feed Rate Below 1/16″ 1/8″ 1/4″ 1/2″ 3/4″ 1″ 1-1/2″ 2″ Aluminum 99-101 .001 .003 .007 .012 .016 .020 .025 .030 Aluminum Bronze 170-187 .001 .003 .004 .008 .010 .012 .015 .020 Balkelite – .002 .005 .006 .008 .010 .012 .015 .015 Brass 192-202 .001 .003 .004 .008… Continue reading Hardness Scale for Various Materials
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