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Covington Engineering Three Headed Sphere
Machine
Make
Beautiful
Spheres
From
2
1/2"
to
9"
in
Size
Covington Three
Headed Sphere Machine Features:
-
Three 1/6 Hp, heavy duty gear motors,
Available in 110v 60hz
or 220v 50hz.
-
156 Rpm with 60 in-lbs torque, 220v
50hz model 130 Rpm.
-
Each motor is independently mounted on
swivel base.
-
Stands 36" high with water tower and
grit feed.
-
Large spin handles for quick
adjustments.
-
Heavy steel frame and guides for years
of use.
-
Easy to use for beginners and experts
alike.
The water supply and grit
dispenser are mounted so the sphere can run constantly with a fresh
supply of
grit and water. All three heads are spring loaded and work
independently from
one another and can be quickly adjusted with large spin
handles. Unit comes
complete with all the above features, 1 grit catch pan,
instructions,
guarantee, and choice of one set of cutter cups. Please
state cup size when
ordering: 1 3/8" (cuts 2"- 3" spheres), 2 3/8" (cuts 3" - 5" spheres),
3 3/8" (cuts 5" - 7" spheres) 4 3/8" (cuts 7" - 9") .
Model #383TSM Size 43" x 39" x 20 1/2",
shipping weight 255 lbs. $2,274.00
Extra Sphere Machine
Cutting Cups (sold in groups of three)
Model #
|
Description
|
Weight
|
Price
|
LSM301 1" Cutter Cups
|
Cuts 1 1/4" to 2" Spheres
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4 lbs
|
$33.00
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LSM302 1 3/8" Cutter Cups
|
Cuts 2" to 3" Spheres
|
5 lbs
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$40.50
|
LSM303 2 3/8" Cutter Cups
|
Cuts 3" to 5" Spheres
|
9 lbs
|
$49.50
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LSM304 3 3/8" Cutter Cups
|
Cuts 5" to 7" Spheres
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13 lbs
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$67.50
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LSM305 4 3/8" Cutter Cups
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Cuts 7" to 9" Spheres
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16 lbs
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$81.00
|
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Covington 5" Bead
Mill
Makes Beads from 5/16" to 3/4" in
Diameter. Best Suited for Producing Beads From
Hard Material as Agate, Jasper and Jade.
The Covington
two-speed mill operates at 380 and 250 RPM. The fast speed is best
suited for finishing beads after initial grind. The slower speed
also reduces the abrasive action and should be used when milling softer
materials such as malachite, rhodochrosite, and turquoise. These
materials require light head pressure and finer abrasive grit.
Comes with instructions and guarantee.
|
| Preforming
of
Beads: It is necessary to cut the gemstone material
into cubes, slightly larger than the desired size. Accuracy in cutting
the cubes so they are uniform in size will hasten grinding. Complete
the preforming process by grinding off all corners and sharp edges
until the cube is a rough sphere. |
| Milling:
The
preforms
are
placed
in
the
cast
aluminum
5" diameter bead chamber
with a 50/50 mixture of silicon carbide and water. The 4 1/2" diameter
x 1/2" aluminum head has a 3/8" recessed ring in the ceiling. Milling
action is achieved by rotating the chamber with the location of the
beads controlled by the milling head. |
| Procedures:
It
is
necessary
for
the
operator
to
develop
his own procedure by making
test runs and keeping records of gemstone hardness, silicon carbide
grit size and milling time. Remember, soft materials require light mill
head pressure and finer abrasive grit. |
| Caution:
The
mill
is
not
recommended
for
gemstone
material
softer than 5 on the
Mohs hardness scale. This is because the bead mill is a very aggressive
machine. |
| Load:
You can grind twenty 1/2" beads at one milling. |
| Cleaning:
Chamber
and
head
can
be
quickly
removed
for
easy cleaning. |
Polishing: Beads must be polished in a gem tumbler.
Model #1040 Size 24" x 12" x 16"
Shipping weight 75
lbs. $659.00 |
How to order:
Machines are assembled and shipped to you direct
from the manufacturer. Please call us or email us for a
shipping quote. We will call you or email you back with the order
total. Once we have come to agreement, we will send you
an invoice to pay us securely through PayPal. You may also mail
us a
money order or cashiers check. Please note: We ship to USA
only by FedEx or by motor freight carrier, no international sales.
Bill
Staggenborg
541-954-0039
Click
Here
to
Email
Me
for
Shipping
Quotes,
Questions
and
to
Purchase!
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Copyright
©
Willamette
Valley
Rocks 2010
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