How to Polish Rocks

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How to Polish Rocks

Polishing rocks is a great way to bring out the best in your rock collection, or to use smaller rocks as part of a design. It may take a few weeks or months before you achieve the best polish, but it’s totally worth it. Here’s how to polish rocks.

Manual Polishing

Materials

  • Big plastic jar
  • 1/3 cup fine sand
  • Water
  • Duct tape
  • Medium-sized rocks

Procedure

  1. Use a big plastic jar and have it cleaned and dried thoroughly.
  2. Put in the 1/3 cup of fine sand.
  3. Add in water little by little until the water is slightly more than the sand.
  4. Add in the rocks. Don’t overfill the jar with too many rocks. You need to have lots of space where they can go around and jostle.
  5. Seal the jar carefully. Put duct tape around the lid to make sure that no water escapes.
  6. Shake the jar repeatedly until your arms hurt. Rest for a while before repeating or pass on the jar to another person to continue shaking.
  7. You can also have the jar rolling around in your garden. Kids love kicking things around, and you can ask them to roll the jar around as they do so. Just make sure that you watch them while kicking to make sure they don’t damage the jar or remove the lid.
  8. Continue doing this repeatedly for a few weeks. Check if they’ve been polished enough by taking off the lid and inspecting one of the rocks.

Rock Tumbler Kit

Materials

Procedure

  1. A rock tumbler is a tool used specifically to polish rocks. They are available in most hobby stores or online.
  2. Add the rocks and the coarse abrasive grits in the tumbler. They usually come with the kit.
  3. Use the tumbler for around a week.
  4. Remove the rocks from the tumbler to wash thoroughly.
  5. Remove the coarse abrasive grit and replace with medium grade abrasive grits. Use the tumbler for another week.
  6. Remove the rocks from the tumbler and separate the smaller pieces and pebbles from the bigger rocks.
  7. Pre-polish the rocks for another ten days and finalize polishing for another two weeks. Finally, remove from the tumbler to wash and dry. Set on a towel to air-dry.

 

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