1. The air bubble holes in the Andis and Oster clipper wheels
helps hold the grit onto the surface of the clipper wheel giving you
more blades sharpened than you would get without the air bubble
holes.

Answer: The truth is all these holes actually do is make the wheel
a little lighter. True the holes fill up with grit, but they also take
away from the sharpening surface of the wheel. The myth is that
while you are sharpening you are also using the grit trapped
inside these air bubble holes. It goes on to say that some of the
grit inside the holes will release as the cutter passes over them
putting more grit onto the face of the wheel allowing you to
sharpen more blades.

The truth is yes the grit is pulled out of these holes (venturi effect)
as the cutter passes over them, but the grit does not attach itself
to the surface of the high speed spinning wheel. How could it? In
order for this myth to work the grit would have to come out of the
hole at the tips of the cutter and then stick to the high speed
spinning wheel, then travel all the way around the wheel to the
back side of the cutter you are sharpening.
Of course that could never happen, what does happen is the grit
comes out of the hole at the tips of the cutter and is blown away
as soon as it comes out of the hole. It does not stick to the clipper
wheel and it does not help sharpen any extra blades. All it does is
make more of a mess with plenty of extra grit flying into the air
around you.

Unlike Andis and Oster clipper wheels Ace clipper wheels have no
air bubble holes on the surface of the wheel giving you a larger
sharpening surface than a wheel that is full of holes. It takes
rolling grit to sharpen a clipper blade. The problem with these air
bubble cavities is that the rolling grit will fall into these holes and
then fly away. A clipper wheel with no air bubble holes in it will
hold the grit much longer than a wheel full of holes giving you
more blades sharpened than on a wheel of the same size that is
full of holes. That is just the opposite of what the myth says!

2. Grooves, grooves are even worse than air bubble cavities
because they severely reduce the sharpening surface of the
wheel. Heavily grooved clipper wheels will cause severe drag on
your cutters as you try to sharpen them because only the tops of
the grooves have any rolling grit on them and since the grove
tops are thin the grit will quickly roll off deep into the groove itself
and then fly away or get trapped deep into the groove. Grooves
serve no practical purpose on a clipper wheel that could even
possible help sharpen a cutter.

3. Patterns, or as one company puts it the face of the clipper
wheel is serrated. It may be serrated when it is new, but as soon
as you charge the wheel with grit the serrated pattern will quickly
disappear and the rolling grit will have its way on the face of the
clipper wheel leaving very fine record player grooves on the face
of the clipper wheel. These fine grooves left by the rolling grit is
what you want and you want as many of them as you can get.
Grooves cut into the clipper wheel and or holes reduce the
amount of fine rolling grit grooves you will have available to
actually do the sharpening you are looking for.  Deep grooves
and holes take away from the sharpening ability of your clipper
wheel by allowing grit to fall into a cavity where the grit will either
be blown away into the air around you or become trapped inside
the cavity.

The truth; the truth is the best sharpening surface on a clipper
wheel is a smooth straight surface that will hold all of the grit and
not just some of it against the cutter you are trying to sharpen. To
effectively make the smooth surface of a properly tapered clipper
wheel the most useful you first have to break it in by making the
very fine record player grooves left by the rolling grit. Break in
instructions are included with all of our clipper wheels.

Tip

To make the grit stay on your clipper wheel even longer
remember the colder the clipper wheel is the harder the lard oil
will be, the harder the lard oil is the longer the grit will stay on the
clipper wheel. That is why on hot days you get less blades
sharpening per charge than on colder days when you will always
get more. For the maximum amount of blades sharpened on any
wheel if you can, keep your shop air conditioned and you will
always get the most blades sharpened per charge and of course
avoid clipper wheels full of  holes and or grooves to get the
maximum amount of rolling grit possible while sharpening your
clipper blades.
Clipper Wheel Myths