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What to Know About Silver and Deming Drill Bits

What to Know About Silver and Deming Drill Bits

Hard drill bits are used for complex tasks in metal and woodworking. These parts have been produced in the United States for a very long time; the wheelwave industry dates back to the 1800s. As the West was expanding, people and commodities were transported by sturdy wagon wheels.

These settlers required strong fasteners to be used with solid materials that required drilling.


In reality, drill bits are being discussed when Silver & Deming drills are brought up. All-purpose bits are used with Silver and Deming drills when the maximum drill chuck capacity is 1/2 inch. They go by several names in Canada, including Blacksmith Drills, S&D Drills, and Prentice Drills. They have a 3-inch shank and measure 6 inches overall. They are distinguished by having a shank that is smaller in diameter than the bit.


There are numerous fractional and metric sizes and functionalities available for Silver & Deming bits. 118-degree points are found on standard and heavy-duty bits, which are used for machine or portable drilling of mild steel, aluminum, magnesium alloys, and ferrous or non-ferrous metals.


Bits with 135-degree points are among the heavy-duty drill bits. Please utilize them for machine or portable drilling of titanium, stainless steel, hard steel, and other hard metals.


The flutes of Silver and Deming drill bits have an oxide surface that facilitates chip welding and helps to keep lubricants in place. Compared to untreated tools, a bit and shank coated with titanium nitride or tin will drill 200% to 700% more holes. Certain bits featuring split points can self-center and fragment chips while drilling. Certain shanks are three-sided for use in three-sided chucks.


The company that Albert R. Silver and John Deming founded in 1854 to manufacture agricultural machinery gave rise to Silver & Deming. They later branched out into drilling machines after producing a wide range of devices, primarily for wheelwrights. They invented the large-size twist drill bit with a retractable shaft that was designed to be used in a chuck that was smaller than the cutting diameter of the bit. Nevertheless, they failed to obtain copyright for their invention, and other businesses quickly imitated it. This kind of drill bit is still commonly referred to as Silver & Deming drills.

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