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Rock Tumbler
Model #NB527
Instruction Manual
WARNING: CHOKING HAZARD – Small parts. Not suitable for children under 3
years.
WARNING: Only for use by children over 8 years old. Only for use under the
supervision of an adult. This toy contains sharp edges.
This toy must be assembled by an adult.
DANGER: To prevent electric shock do not immerse the tumbler and supplied AC
adaptor in water. The AC adaptor is not a toy!
Read all instructions before use. Follow them and keep them for future reference.
Keep small children and animals away from the working rock tumbler. Store your rock
tumbler out of reach of small children. Eye protection is not included.
CAUTION - ELECTRIC TOY
- Not recommended for children under 8 years of age. As with all electric products,
precautions should be observed during handling and use to prevent electric shock.
- The tumbler must only be used under adult supervision.
- The tumbler must not be connected to more than one power supply.
- The tumbler must only be used with the supplied/recommended adaptor.
- The adaptor is not a toy! Keep all electrical items away from small children.
- The tumbler and AC adaptor supplied should periodically be examined for potentially
unsafe conditions such as: the risk of fire, electric shock, injury to persons, damaged
cord, plug, housing or parts and stalled motor. In the event that such damage is found,
the toy should not be used until properly repaired by qualified personnel or replaced with
an identical power source.
- The tumbler MUST BE disconnected from the AC adaptor and mains power before
cleaning. Wipe clean only with a damp cloth.
- For indoor use only! Do not expose to rain or moisture.
- Misuse of AC adaptor can cause electrical shock.
CAUTION
Adult supervision required. Rocks contain natural sharp points. Handle with caution.
Abrasive grits and polish and rock dust can cause eye irritation. Avoid contact with eyes.
CAUTION: ELECTRIC TOY
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Please use care when plugging into AC outlet
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FIRST AID: In case of eye contact, immediately flush eyes with plenty of water for at least 15
minutes. Get medical attention immediately if irritation or blurred vision occurs.
IMPORTANT NOTE
To protect the unit and avoid water leaking, always wash the barrel cover with clean water
thoroughly before locking. Make sure there is no dirt left in the gauge inside the cover
because the dirt will bring excessive frictional force that will affect the strength of the locking.
Leakage of water can cause permanent to the motor.
COMPLIANCE WITH FCC REGULATIONS
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause
undesired operation.
This equipment has been tested and found to comply with the limits for a class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
- Consult the dealer or an experienced radio/TV technician for help.
CAUTION: Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
BEFORE YOU GET STARTED – REMOVE CUSHION PAD BEFORE USE!
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WELCOME TO THE WORLD OF ROCK COLLECTING AND JEWELRY MAKING
The aim of rock tumbling and polishing is to produce gemstones ground and polished to their
natural beauty. There are many projects you can do with the polished stones. You may
decide to mount them in a display case. You can decorate boxes, use them in arts and crafts
projects and, of course, make jewelry. This kit contains rings so you can apply a small
amount of glue (not included) to the stone and setting and glue together. You can use tape to
hold the pieces in position while the glue is drying. Allow to dry overnight.
SETTING UP FOR OPERATION
Parts of Your Rock Tumbler (Model #NB527)
1. Clear Top Cover
2. Barrel
3. Barrel Cover
4. LED Indicators
5. ON/OFF Button
6. 1 Day Button
7. 2 Day Button
8. 3 Day Button
9. DC Jack (on rear side)
Connecting to electric power
Insert the DC plug of the supplied AC adaptor into the DC jack on the rear side of
the tumbler and connect the AC adaptor to a standard AC wall socket with 120V~ 60Hz
continuous power supply.
Note: When the unit is not operated for a long period of time, unplug the AC adaptor from the
tumbler and AC wall outlet.
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Getting Started and Helpful Tips
1. Locate an area in your home where the continuous sound and disturbing noise from the
tumbling action is minimum.
2. Level the tumbler on a flat corrugated board or similar non-slippery material. Because of
vibrations during operations, the tumbler may have a tendency to “migrate”. You can
place a small weight next to it to prevent this.
3. The barrel cover can be identified by the embossed OPEN, CLOSE and ARROW
markings on its surface. After placing the gemstones, polishing powder and adequate
amount of water into the barrel, securely close the cover by turning it clockwise. See
Procedures and Tips on Tumbling and Polishing Gemstones below.
4. Always place the barrel into the cradle of the tumbler with the barrel cover facing the left
hand side as it will not fit the other way round by design. See figure below on the left.
5. Carefully fix the clear top cover into the top of the tumbler by aligning its front and rear
snap locks into the recesses on the tumbler. See figure below on the right.
6. Press ON/OFF button and select DAY you prefer to start up the tumbler, and you should
will see the barrel start rotating if everything is normal.
Note: The barrel will not start rotating when the top clear cover is not in position. You
have to press ON/OFF button again whenever the top clear cover is removed and
replaced.
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Procedures and Tips on Tumbling and Polishing Gemstones
7: FINAL POLISHING STEP: When the surface of gem stones become smooth, add ½
packet of the grit polishing powder and continue to tumbler until the best desired shinny
result – about 1 to 2 days.
5: Put barrel onto base of the machine. Plug the machine into a wall
outlet, press ON/OFF button and select DAY you prefer to start up
the machine. Check your barrel after 24 hours. See that the water
color is gray and sludgy and that the water is above the gemstones.
If it is not, add more water. This cycle takes between
1 to 2 days. It is always better to grind longer if in doubt.
4: Replace barrel cover firmly secured in the groove
inside it. Be sure the cover is locked into place by aligning.
3: Add water to just cover top of the gemstones.
Be careful not to let any grit (polishing powder) get in the rim
of the barrel as it might cause leaks in the seal.
2: Place the gemstones in the rock tumbler barrel. You DO NOT
need to add the grit polishing powder yet…that comes later.
1: Start with 1/2 bag of gemstones.
Rinse raw gemstones to wash away dust and dirt.
6: Repeat steps 3 to 5 every 2 days until stones are smooth.
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IMPORTANT INFORMATION FOR SAFE USAGE
- This Tumbler is for children aged 8 years plus, it is NOT intended for children under 3
years of age.
- The kit contains small parts such as grit, stones and jewelry parts that could be
swallowed. Keep away from small children and pets and store carefully.
- Keep all contents away from small children.
- DO NOT USE outdoors or in a moist environment.
- DO NOT overfill the barrel with water; add water to cover the stones only.
- NEVER leave the barrel tumbling for more than 24 hours without checking it at least
once.
- NEVER POUR USED GRIT OR GRINDING POWDER DOWN HOUSEHOLD DRAINS:
It can set rock hard and cause a pipe blockage. Pour on the garden soil or in an old
receptacle like a bucket. Empty water and take sludge to the trash.
- Make sure no grit enters household machinery like the washing machine, shake and
check all clothes thoroughly before washing.
- In case of eye contact (with powders): wash out the eye with plenty of water for at least 5
minutes. Seek medical attention.
- If any type of powder is ingested or inhaled seek medical attention.
SAVE THE PACKAGING FOR IMPORTANT INFORMATION
SEE MORE AT www.BenFranklinToys.com or www.ThinAirBrands.com
© 2019 Thin Air Brands, LLC, Parker, CO USA
MADE IN CHINA
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