Miller Dowel Company’s TruFit Drill
Bits are stepped (not tapered) to create the perfect
pilot hole to match a corresponding Miller Dowel. The
fit between the Miller Dowel and the TruFit pilot hole
results in just the right amount of surface tension
to give the dowel its well known ‘instant set
time’ when seated.
TruFit Drill Bits are made from hardened, high quality
industrial grade high-speed steel (HSS) that can withstand
high temperatures without compromising performance,
or shortening the cutting life of the tool. Our drill
bits are computer ground to a tolerance of two thousandths
of an inch. They are designed with an aggressive helix
and deep polished flutes to evacuate debris and to create
efficient cutting angles. TruFit Drill Bits are extremely
effective at cutting and removing large amounts of wood
material quickly and easily.
Other features of the Miller Dowel TruFit Drill Bits
• Three positive locking flats are ground on the
shank to prevent spin-out in the drill chuck.
• A depth groove is ground into the shank to assist
the user in judging the depth of the pilot hole. This
groove is deep enough to hold a rubber O-ring, if desired.
• A split point prevents walking along the grain
when starting a new pilot hole.
• The overall lengths of our stepped drills are
slightly longer than their corresponding Miller Dowel,
which provides a small well at the bottom of the pilot
hole for debris or excess glue to reside. TruFit Drill
Bits are sold with an acrylic storage tube.