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How to Polish Rocks With A Dremel and Make It Shiny?

Collecting rocks is quite an enjoyable hobby for people of all ages. It is cheap to carry out and a wonderful way to go out and have fun in the outdoors.

If you have small kids, it's a great way for them to learn about science. If you have quite a number of soft rocks that you've collected over time, you can polish them to reveal their natural luster and hues.

The notion behind polishing rocks is pretty straightforward. Just like in nature, a harder rock is rubbed against one with a softer texture, to grind down the rough patches. Machines for polishing rocks can be noisy when they tumble stones together to make them smooth and shiny. Similar results can be achieved without using a machine.

A Dremel drill also known as a handheld rotary tool is a suitable device you can use while polishing your rocks.

 A Dremel's operation depends on high speed rather than torque. By attaching the appropriate bit to the hand rotary tool, the device can drill, polish, clean, grind, carve, sharpen, sand or engrave some patterns on materials. Dremels may be battery powered or corded.

Things You will Need:

  • A Dremel
  • Sanding attachments for the Dremel in different grits: 600/800/1000/1200.
  • A clamp
  • A polishing cloth
  • A compound for polishing
  • Eyewear to protect your eyes 
  • A pair of gloves for your hands
  • An air mask

Prior to starting the grinding process, you need to clean the rock. Fill a bucket with warm soapy water and wash off the dirt from the rock. You can use an old toothbrush to reach the crevices and remove stubborn stains.

Procedure for Polishing Rocks with a Dremel:

  1. Put the stone inside the clamp to allow you to access a good part of it. Placing the stone on a clamp protects your fingers against being grinded as you polish.
  1. Put on your protective eye wear, gloves and an air mask.
  1. To the Dremel, attach the sanding with the least grit and plug in the drill. Grind the whole surface of the stone using the grinding tip. To avoid lengthy scratches, utilize only the top half of the grinding bit. Aim to work at a flat angle against the stone as much as you can to grind the rough edges well.
  1. Change to the 800 sanding grit and commence with grinding the whole rock. Progress with finer bits as you continue until the stone begins to shine. Move it in the clamp so you can see the rough edges and get rid of them.
  1. Polish the rock's surface to achieve great shine using a polishing cloth and a compound for polishing. Buff this compound into the rock's surface for a few minutes. This will bring out the natural shine of the stone.

For people who love to collect rocks, knowing how to polish the stones to reveal their natural luster is as vital as doing the rock collection. You don't need to have extraordinary proficiency, just be patient and interested.

How to Polish Large Rocks

Most of the time, rocks are in shapes that are not uniform. To shape large rocks to a rounded, uniform point, utilize a hammer and a chisel. This will help you in breaking off the big protrusions. As rock dust may harm your breathing system and eyes, you should put on protective glasses and a gas mask while dealing with rocks.

After you've shaped down the large rock, you can grind the rough patches against a rough surface to smoothen the patches. Wash off any dirt and debris that may be on the rock using warm soapy water. To soften the stubborn dirt and debris that is on the rock, you can soak it in the water for some 30 minutes.

It's important to wash off dirt from rocks prior to polishing them to avoid clogging up your sandpaper or machine with debris, also the rocks won't be properly polished.

Hand polishing a rock that is quite large may prove to be a tiring task. It may be more preferable to acquire some bench grinders. Outfit them with some pads for polishing then apply on each a different type of polishing compound.

Unless you're planning on shaping the large rock a lot of polishers, apart from tumblers, will not be suitable. You'll need to adapt some apparatus to hold the rock in place while you work on it.

The challenge with sanding is that many stones may be harder than the grit of the sand paper. Most sandpaper is made of flint or garnet. For a large rock, try and find sandpaper made of carbide or diamond. You'll accomplish more this way.

Health wise, it is not good to grind stones in the outdoors; you can easily acquire a terminal lung illness known as grinder's consumption. Grinders working in cutlery industries used to acquire this disease, and yet they used water cooled machines. It is better to use a tumbler like a cement mixing machine to tumble huge rocks.

Last but not the least, if you choose to work in the open, ensure that you put on high-quality air masks.

This applies to hand polishing as well when you're using sandpaper. The rock dust is very harmful. Dremel drills tend to spread stone dust around quite rapidly so it is better to use professional rock grinding tools to do a safe job.Safety is paramount when you're having fun polishing rocks.

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