A Hand Held Wet Diamond Grinder
for
Polishing larger Rock Specimens
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Are you interested
in learning more about how to do Lapidary Work?
Click here for informational books.
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Click on photo for larger image
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Description of Lapidary Equipment
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MK-1503
Lapidary Kit
$625.00

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Barranca Diamond Wet Polishing
Kit for Rock
The MK-1503 Wet Polishing Lapidary Kit is ideal for handheld
grinding and polishing of gemstone and rock materials such as onyx, agate,
petrified wood, jade, opal, etc.
The polisher is used with the vacuum brazed convex wheel for aggressive
shaping and grinding, contour carving and sculpting of the material. Resin diamond discs are used sequentially for polishing.
The continuous rim cup wheel is used for groove and saw mark removal from
slabs. The polisher easily attaches to a standard hose to enable the
unit to dispense a steady flow of water to diamond pads and grinding
wheels. The 4" flexible rubber Hook & Loop backer pad allows for
quick pad changes. 90 day limited warranty.
Barranca Diamond Wet Polishing Kit Includes:
- MK-1503 electric polisher
- GFCI
- 4" diamond resin disc set (grit sizes: 30, 50, 120, 220, 400, 800,
1800, 3500, 8500, 13,000)
- 4" rubber backer pad
- BD-850 4-1/2" coarse (30/40 grit) vacuum brazed convex wheel
- BD-380R 4" fine continuous rim flat surfacing/grinding wheel
- 4" felt buffing disc
- Wrenches, D-handle, side handle & nylon carrying bag
MK-1503 Information
Motor - 120V, 800W
Amps - 7
Speed -700 - 3000 RPM
Shaft Thread - 5/8-11
Motor Weight - 6 lbs
Click here for:
Polishing discs, pads and parts for this and
other Barranca equipment
Polishing a petrified
wood specimen
Large Coral
wet polished at the Rock Shed
See instructions
at the bottom of the page
Please Note:
This item will be shipped direct from our suppler to you.
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Also available in Wet Air Polishing tool for Lapidary
Work |

Air Model
BD-2321WR
Grinder Only
$475.00

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Air Model BD-2321WR Grinder Only
The BD-2321WR comes with 25' water hose, 5' air hose, 3' air/water hose
protector, D-handle, wrenches. (Backer
pad not included)
Click here for:
Polishing discs, pads and parts for this and
other Barranca equipment
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Grind - Polish - Demonstration Box - for overspray
containment when using the wet grinder |

BD-125
Grind/Polish Box
#999998
$310.00

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This is a Grind Polish box to help contain
overspray when wet polishing. Water drains through hole in one corner of pan.
30" x 24" x 6" aluminum box with acrylic shield on 3 sides. Includes rubber
mat & submersible electric water pump.
Please Note: This item will
be shipped direct from our suppler to you.
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Lapidary Wet Polishing Guide:
Petrified Wood, Opal, Agate and Other Gem Stones |
Barranca's polishing pads are designed to achieve a monument quality
finish on all straight or shaped surfaces. The unique design of the
polishing pads allows for rapid and even removal rates with minimal
effort. When used correctly, these pads provide a clear advantage
over all other polishing methods. |
Polishing Steps: |
1 |
Cut or shape material to the desired surface
or pattern using either a diamond blade or diamond cup wheel. |
2 |
Using a clamping device, secure material to be
polished to a proper work surface. |
3 |
Remember, polishing is a process which takes
time and requires that each grit size pad be used properly to
achieve a quality finish. |
4 |
Using the 50, 120, or 220 coarse grit pad, remove
all rough scratches and cut marks. Smooth the surface as much
as possible with these specific grit pads. The smoothing of the
surface during this stage of polishing will determine the quality
of the finish that will be achieved. After working the area, dry
the surface to determine if all large scratches have been removed.
Using a lumber crayon or pencil, mark the surface to determine
the depth of the scratches remaining. |
5 |
Once all large scratches have been sufficiently
removed, the finer grit pads can be used to achieve the quality
finish. The fine grit pads consist of 400, 800, 1800, and 3500.
If more luster or color from the polished surface is desired,
use the extremely fine 8500 grit pad. |
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After completing the polishing process, the following steps must
be followed if a mirror finish is desired: |
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Make a paste of cerium, aluminum
or tin oxide using water. |
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Apply paste to felt wheel. |
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Run felt wheel with slight pressure
against the surface to generate heat. |
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After paste dries, polishing is complete. |
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Wash surface with water and dry. |
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The surface should have a high luster or finish. If the surface
appears to have small scratches, repeat step 5. In some cases it may
be necessary to repeat steps 4 & 5. |
Important Points in the Polishing Process: |
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Barranca Diamond polishing pads are designed
to be used solely with water to minimize the wear on the pads
and prevent hazardous dust. (The use of water acts to cool the
polishing pad material, flush away grindings, and eliminate hazardous
dust). Always wear eye protection at all times. |
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Never skip grit sizes during the polishing process.
Skipping grit sizes will result in an unsatisfactory finish to
the stone. |
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Diamond polishing pads wear out prematurely due
to the overworking of the material or by not using a sufficient
amount of water. Do not use an excess amount of water. |
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Failure to spend adequate time polishing with
each grit size pad will result in an unsatisfactory finish. |
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Selection of the flexible Velcro (rubber) backer
pad for shaping and curved work is highly recommended. Use the
rigid backer pad for the straight edge and flat face material. |
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Flat 4" 100 mesh wheel can be used to plane down
uneven surfaces, remove stubborn scratches and knock off saw nubs. |
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Instructions taken from Barranca Diamond Products, Inc. Wet
Polishing Guide
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