|
Starting
template
made from plastic.
|
Starting a Core
Drill Bit by Using a Template
Core drill bits above 1/2"
work best when used in a drill press rather than in a hand drill.
Starting a core drill bit when using a drill press is simple,
since the drill press keeps the drill bit from moving about.
To reduce drill bit slippage or "walking" when using
a hand drill, a template can be made to help start the drill
bit if necessary.
A template is made by drilling
a pilot hole in a piece of soft wood or plastic, using the diamond
core drill bit or by cutting a "V" in the edge of a
piece of wood or plastic or drilling a hole in it the size of
ther core drill. The hole template works best, however,
the "V" template is easier to make and can be used
with many sizes of core drill bits.
Templates are often made of 1/8"
plexiglass, 1/8" pressed wood or even cardboard. For
repetitive drilling, a plastic or plexiglass template works best
since water lubrication can be used immediately. The template
is placed on the surface of the material being drilled, with
the pilot hole or "V" above the target hole area.
The template will hold the core drill bit in place as it starts.
After just a few revolutions of the drill bit, a groove is created
and the template can be removed. |
Diamond Core Drill Bits are premium specialty drill bits designed
for drilling in hard abrasive non-ferrous materials. The
electroplate bonded diamond drill bits have a superior design
developed through extensive testing. Material uses include:
use on wood, plastic
and other relatively soft materials. As shown in the picture
on the left, a pilot bit is a small drill bit located in the
center of the hollow core drill bit. The pilot bit helps
keep the main core drill bit centered while starting a hole.
Pilot bits are especially convenient when using a core drill
bit in a hand drill. When a pilot bit is not present, a
core drill bit may tend to "walk" or "wander"
until the bit seats into a groove.
