Darex V-390 - Manual (Page 3)

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The Darex Story
Darex Corporation began in 1973 in Beecher, Illinois. The D, A and R of Darex are the initials of three
generations of the Bernard family; David, Arthur and Richard Bernard. David and his father Richard
founded Darex. Grandfather Arthur Bernard, who earlier founded the Bernard Welding Company
contributed his energy and guidance to Darex until his death. Art’s inventions revolutionized the
welding industry.
In 1978, Darex relocated to Ashland, Oregon. Grandson Dave and son Dick carry on Arthur’s legacy of
inventiveness. Darex grew to become the most recognized name in the cutting tool sharpening
industry. Today, Darex is a world-leading manufacturer of precision cutting tool sharpeners.
Darex is proud to offer a complete line of quality precision cutting tool sharpeners at affordable prices.
Before our first days, we at Darex had looked at our competitor’s sharpeners and asked ourselves:
”Must cutting tool sharpeners be complicated? Why must the choice in sharpeners have either cost
prohibitive accuracy or low price inaccuracy?” Our sharpeners prove you can have it all: simplicity,
accuracy and affordability.
We have always emphasized innovative product design and tested technology. The experienced
personnel at our modern manufacturing facility use the latest production methods. The Darex
marketing team knows first-hand the machines we sell and will guide you to the best machine for
your needs. Our skilled technical service department is happy to answer your questions about our
products or cutting tools.
The V390
This limited duty unit is the most economically priced of the Darex Industrial Sharpeners. It is
designed for the small fabrication or job-shop where a lower volume of drill sharpening is required.
Point angle range is 118 to 140 degrees. Size range is 1/8” to ¾” (3mm to 19mm). This sharpener
has point splitting capabilities. With the standard electroplated CBN (Cubic Boron Nitride) grinding
wheel the V390 will sharpen high-speed steel, cobalt, parabolic, TiN and other coated drill bits. An
electroplated diamond wheel is available to sharpen carbide drill bits. The electroplated diamond and
CBN wheel will sharpen approximately 1000-2000 drills before replacement is required. The Darex
V390 is most efficient when used to sharpen drill bits to their original point angle. The troubleshooting
section of this manual is designed to anticipate many common questions and applications. To keep
your DAREX V390 in top condition, please refer to the maintenance section of this manual. A complete
schematic breakdown, replacement wheels and parts are listed on page 18 and 19.