3 Making Modes of Metal-Bonded Diamond Grinding Wheels
How do I polish a granite edge
Source:www.stonediamondtool.com Date:2013/1/8 Read:1254
One of the uses of a core bit is to collect samples.
As it is being cut, the core sample or plug
passes through the hollow drill bit into the
Engineers use core samples to test the strength
of construction materials, such as concrete.
Scientists use them to study rock formations
in search of precious metals or substances,
such as oil.
Another use of a core bit is to drill large holes
for passages.
Often this is useful in construction where wires,
conduit, or pipes need to pass through
substances such as concrete, masonry,
and other construction materials.
Typically, electricians use core bits to drill out
wooden studs to run electrical and data wiring.
Plumbers use different sizes of core bits,
from small ones for sink plumbing to large
ones for toilet drainage.
The type of core bit that does not collect a core
or plug of material is used to enlarge existing holes.
Generally, these core bits do not have a tip
that will start a hole; therefore, an operator must
predrill a hole with another type of bit.
These core bits are similar to reamers,
but reamers shave only a little material from a hole.
A core bit may double the size of the hole.
(To be continued......)