Spade drill bits come in a variety of different shapes
and sizes and are usually used for drilling holes in the wood, but can
be used in other building materials. They're not shaped like a normal
spiral drill bit, they use a flat drill bit head, that comes in
different widths, to create different sized holes.
Disadvantages For Using Spade Drill Bits
I can think of plenty and only have a handful of them, left over from
the old days. They don't seem to last very long and require constant
re-sharpening. Some hardwoods are difficult to drill through, when spade
bits become dull, they will actually quit drilling and start smoking.
One time I was using a spade bit to drill into a flat piece of Oak. I
became so frustrated, because I had just sharpened the drill bit and now
it was starting to smoke, so I pulled it out and took it over to another
scrap piece of Oak and started drilling, with the intention of seeing
how long it would take, before the piece of wood caught on fire.
After a few minutes of what I like to refer to as blissful ignorance, I
stopped throwing my little temper tantrum and went back to work. I've
never been a big fan of them and probably never will.
Sometimes I have problems, keeping the drill bits lined up perfectly in
the hole that I'm drilling. They will often pop out and damage the board
you're trying to drill through.
Advantages For Using Spade Drill Bits
It's usually an inexpensive way for drilling large holes. If you only
need to drill one hole or your drilling through something soft like
drywall, a spade drill bit will get the job done. They're often cheaper
than other drill bits also.
|
|
|
