National Geographic Hobby Tumbler: Instructions & Guide

Safety Information

• Use only the recommended transformer (Model SAW06D-120-0500UD / UK Model: SAW06D-120-0500BD).
• The transformer is not a toy.
• Regularly inspect the transformer for damage to the cord, plug, or enclosure. Do not use if damaged.
• Do not connect the tumbler to more power supplies than recommended.
• Dispose of waste electrical products responsibly through recycling facilities.
• Read all warnings on individual component packaging carefully. Adult supervision is required.

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.

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

NOTE: 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.

Before You Begin

Confirm that all parts are included in your kit. For concerns or missing parts, please contact: custserv@discoverwithdrcool.com

Included Parts:

1. Rock tumbler base
2. Tumbling barrel
3. Grit (inside barrel)
4. Rough gemstones (inside barrel)
5. Power cord
6. Strainer
7. Replacement tumbler belt
8. Jewelry fastenings
9. Booklets and Instructions

NOTE: The grit and rough gemstones are packaged inside the tumbling barrel.

How to Open the Tumbling Barrel

1. Unscrew and remove the outer black knob.
2. Pop off the stainless steel housing. If difficult, use a flat object like a silverware handle to pry it off.
3. Reattach the black knob and use it to pull off the inner lid.
4. Remove the rough gemstones and grit.

Polishing Instructions

Caution: Grit can damage plumbing. Never pour used grit down household drains. Wash gritty stones and barrel outside with a garden hose.

1. Add your rocks and Grit #1 to the tumbler barrel.
2. Fill with water until it just covers the rocks.
3. Remove the black knob from the inner lid. Re-insert the black inner lid with the screw pointing outward. Replace the metal cap. Reattach and tighten the black knob. Place the barrel on the tumbler base.
4. Plug in the tumbler and select the desired number of days (see "Suggested Tumbling Times").
5. When the cycle is over, pour the contents into the strainer. Rinse the rocks and barrel with water to remove all grit.
6. Repeat steps 1-5 with Grits #2, #3, and #4 in order. This process will gradually polish your rough rocks into smooth gemstones.
7. Use the included jewelry fastenings to create necklaces, rings, keychains, and clip-on earrings (which can also be used as pins). Gemstones can be inserted into keychain and necklace cages without glue. For rings and earrings, adult help is recommended for gluing. Use a hot glue gun or all-purpose adhesive sealant.

Polishing takes time. While this tumbler speeds up the process, expect about 4 weeks for great results. Patience is key.

Tips for Best Results

• Tip #1: Don't overload the tumbler. Fill the barrel about 1/2 to 2/3 full for optimal rock movement and polishing. Overfilling may cause the tumbler to automatically shut off due to the built-in sensor. If this happens, unplug the tumbler, remove some rocks, and plug it back in to reset.
• Tip #2: Use your own judgment. While the guide provides starting times, adjust based on your rocks' hardness and type. Some rocks may need more time.
• Tip #3: Wash test stones before changing grit. Grit #1 rounds edges. After each cycle, wash a few test stones to check smoothness before discarding grit. If not smooth enough, return them to the barrel for more tumbling.
• Tip #4: Add a small amount of mineral oil to finished stones for a shiny look.

Suggested Tumbling Times

• Grit #1: 3-5 days (until edges are smooth)
• Grit #2: 6-8 days
• Grit #3: 6-8 days
• Grit #4: 7-10 days (longer polishing time yields best results)

FAQ's

• Question: What do I do if the tumbler belt breaks?
  Answer: Use the included replacement belt. Remove the broken belt and replace it with the new one.
• Question: Will this work with glass to create "sea glass"?
  Answer: Yes. Research appropriate tumbling times and grit types for glass.
• Question: Can I buy spare parts or more stones and grit?
  Answer: Refill packs are available on Amazon. For replacement parts, contact custserv@discoverwithdrcool.com.

Additional Information (French, German, Spanish)

The document also contains instructions and tips in French, German, and Spanish, covering similar safety information, parts lists, operating procedures, and polishing advice.

Contact Information

For concerns, including missing parts inquiries, please contact: custserv@discoverwithdrcool.com

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