Sharpen Spade Bits and More
The first and only spade-bit sharpener on the market,
the Drill Doctor DDSB, might make you take another
look at these bits for serious woodworking. They’re a heck
of a lot cheaper than Forstner bits.
Most spade bits—even new ones, right out of the
package—leave a ragged surface inside a hole. But given a
really sharp edge, which this machine can deliver, they’re
capable of doing much better.
Grinding a spade bit on the Drill Doctor DDSB guarantees
that both cutting edges will be in the same plane
and that the point will remain centered—a geometry
that’s very hard to achieve if you sharpen spade bits by
hand. Both factors help make a spade bit run true.
The DDSB is a further refi nement of the Drill Doctor
line. Drill Doctors are well-known, reliable machines
for sharpening twist bits. Using the same technology, the
DDSB can sharpen twist bits as well, from 3/32" to 1/2".
Source
Darex, drilldoctor.com, 800-597-6170, Drill Doctor Model DDSB, $130.