
page 7
800.545.6566 www.riogrande.com
Apollo Ring saw Instruction Manual
©2012 The Bell Group, Inc. All rights reserved.
Care & Maintenance (continued)
CUTTING TECHNIQUE
• Always let the blades do the cutting.
Forcing the material through the
blade will not only cause a slower
cut but can also shorten the blade
and belt life.
• There is an optimum feed speed (that
point at which you get maximum
cutting speed for minimal pressure)
for each blade in each material—
you can feel it while you are cutting.
Sensitivity to this causes extremely
long blade life.
SINTERED RING BLADE:
• “Sintered” means that the blade is
comprised of powdered metal with
diamond throughout its entirety.
This makes the blade last many times
longer than electroplated blades
and its cut speed remains constant
throughout its life. The only change
is a slow decrease in size.
• The action of this blade is like a
forward and backwards cutting band
saw and a radial saw, all combined.
They come in both standard and fine
formulations.
• These saws can turn on a dime,
even in amazingly thick materials,
if you take your time and not force
them. The ability to cut backwards is
hugely useful as you can back out or
change direction without having to
rotate the material.
• When cutting curves it is necessary
to take into account that the trailing
edge of the blade also cuts. For this
reason on a particularly tight inside
curve, you may have to veer away
from the edge, trusting the tail of the
blade will sweep by and finish it for
you.
• Note that if the blade is doing hard
work, cutting tight curves through
thick material, you may have to lift
up the splash guard to get it out of
the way. You may get wet but it is
acceptable to do this. Try to keep the
blade in the vertical position while
cutting.
• These blades are tough, but not as
tough as the solid blades, so let the
blade do the cutting and give it the
time it needs to finish. For quick
straight cuts, change to a solid type
blade.
• Straight cuts with these blades can
yield tiny precise slices of material
with an almost polished edge. The
slower the cut the more accurate it
will be. Using these blades, we have
actually cut black granite so thin that
the slices were transparent.
4" SOLID SINTERED BLADE:
• The four inch solid blade cuts well as
a tile saw. Because it is peripherally
driven it is quite standard and will
cut all tiles up to 2cm (¾ ") thick.
• When cutting thicker material (up
to one-inch thick) with this blade,
be careful not to cut into the tray
at the end of the cut as the lower
part of the blade leads. To do this,
put a couple of tile or wood spacers
between the material and the end of
the tray.
• Solid blades can be pushed harder
than any of the other blades. The
only caution is to never allow belt
slippage. If the belt slips (the motor
makes no sound change) and the
blade seems to slow down, stop
pushing immediately and tighten
the belt tension. If it persists you
must push less hard.
• With this blade, there can be
some breakout at the end of the
cut. Turning the tile upside down
when cutting can eliminate this
occurrence.
6" SOLID SINTERED BLADE:
• The advantage of the six-inch blades
over the four-inch blades is that they
are available in both standard and
fine grits and can cut materials up to
3" thick. The cut is more vertical and
the blades last longer.
• Solid blades can be pushed harder
than any of the other blades. The only
caution is to never allow belt slippage.
• If the belt slips (the motor makes
no sound change) and the blade
seems to slow down, stop pushing
immediately and tighten the belt
tension. If it then persists you must
push less hard.
WIRE BLADES (Electroplated):
• “Electroplated” blades have one layer
of diamonds held on by nickel. The
diamond does not wear; it is actually
the nickel that wears, releasing the
diamond. Electroplated blades do
not last as long as sintered blades
and the cutting speed changes
throughout their life, becoming
slower and slower over time.
• When cutting soft or thin materials
such as ⁄" art glass, wall tile, etc., the
electroplated blades last a long time.
How long? This depends on your
cutting technique. Get the feel of the
cut and the blade can last years. You
should get 40–60 hours even if you
don’t get the feel.
• Keep in mind that as soon as you
cut hard or thick material, the high
points of the diamonds get knocked
off, making them smoother but
slower. Fine blades cut smoother but
don’t last quite as long.
• Electroplated wire blades cut in
any direction, which makes them
the most versatile blades for shape
cutting. They are best restricted to
thinner materials such as ⁄" art glass,
wall tile, ¼ " acrylic (like plastics) and
softer materials.
• These blades cut in any direction,
like laser beams, and make an
excellent compliment to the
sintered ring blades. You can do
the majority of the work with the
sintered ring blade and the detail
with the wire electroplated blade.
Having read this manual, you are
now armed with knowledge that will
make your experience more enjoyable
and your results more professional.
Thank you for choosing a Gemini Saw.