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Celtic Knot Bone Ring

Celtic Knot Bone Ring
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I love rings and I love to make them with bone, because it is strong and very durable. For this instructable I will show you how I made my new bone ring, with simple tools and materials.

With a leftover piece I also made a pendant that you can see in this instructable: Triquetra Pendant

The close-up pictures were taken with a Pentax K10 D and a Tamron AF 90mm f/2.8 SP Di macro lens.
The other pictures, with a Pentax SMC-FA 50mm f/1.4.
 
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Step 1Materials

Materials
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Just one: a Bone! Beef bones are the bigger and the most suitable ones.

In Italy, especially in my region, we prepare a very good sauce with bone marrow. It is called pevarà (sometimes pearà) and it is made of bread, bone marrow, beef broth, butter and a lot of pepper. In fact its name literally means peppered. So that is why I have those big bones lying around.

Cleaning
An important point is the cleaning of the bone. After the cooking the sponge-like part of the bone is full of red bone marrow and that is not good if you want to work with the bone. The best way to clean it is to put it in the dishwasher!
I was surprised, when I first tried this trick, how good it worked. It perfectly cleans every part of the bone and exposes the sponge-like part.

I put also some close-up pictures of the sponge-like part because it is too cool. Our bones have this kind of structure near the ends to make them light but strong.


Oh yeah... And some Brown India Ink.
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20 comments
Jan 17, 2012. 10:13 AMridex says:
Hey, Great instructable!

I tried this last night but I ended up breaking it in half. I think because its a combination of the file that I was using and my clamping methods. I will try again on the other bone blank today and see how it ends up. Also did you have any difficulty using the dremel when the ring was really defined? like would you recommend any different techniques other than doing it in the air? Anyway, great job!

Daniel
Feb 5, 2012. 7:47 PMPfarmkid says:
may i just ask where do you get beef bones at
Jan 12, 2012. 9:33 PMl8nite says:
stupid laptop! You should also use breathing protection, even if just a painters mask, bone dust can be very hazardous
Jan 13, 2012. 3:14 PMl8nite says:
Im not really sure why its hazardous but breathing any dust can be a health risk. There are many types of wood, egg shells and bone that it's usually recommended to wear a mask when carving, grinding or sanding
Jan 13, 2012. 5:23 PMironsmiter says:
In the developing world, Bone/horn crafters run the risk of tuberculosis from the dust.
Now, that includes working with horns.

According to OSHA, for medical workers, performing bone operations, filtration is only needed if exposure is over a certain PPM per minute.
The acknowledge no particular danger beyond normal exposure to fine particulate matter.


Using your method, I wouldn't worry too much. Treat it like you would wood.
Between the cooking, and dishwashering, it's gonna be pretty darn clean.
Jan 16, 2012. 11:03 AMdsiple says:
PPM is parts per million. Working with bone creates very fine, powder-like dust which should be guarded against as it can easily be inhaled. I'd bet the PPM is rather high, though I'm not sure of OSHA's limit for bone. I do a lot of bone work and decided on my own to use a mask when I'm using my Dremel to cut or work the bone.
Jan 12, 2012. 3:24 PMmonsterlego says:
Break out the bagpipes.
Jan 13, 2012. 2:47 PMmonsterlego says:
Its Celtic right?
Jan 13, 2012. 3:07 PMmonsterlego says:
I don't blame you.
Jan 12, 2012. 2:53 PMPenolopy Bulnick says:
Cool! I love the pendant too!
Jan 12, 2012. 9:31 PMl8nite says:
Very cool ! thank you for sharing

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