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bone carving
How hard is bone on the mho (talc, gypsum, etc.) scale? Chris
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On Wed, 23 Feb 2005 02:26:36 GMT, wrote:
How hard is bone on the mho (talc, gypsum, etc.) scale? Chris Don't know how hard it is but our local museam has wonderful examples carved by French POW's during the Napoleonic wars using mutton and beef bones from their rations and very basic tools. Not a lot on the net but see http://www.peterboroughheritage.org....0cross%201.htm |
#3
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On Wed, 23 Feb 2005 02:26:36 GMT, wrote:
How hard is bone on the mho (talc, gypsum, etc.) scale? Chris Don't know about the "mho" scale ("mighty hard objects"?), ; ) but I can tell you that it is harder than saaay, hard maple or lignum vitae. Even harder than ironwood (hophornbeam). It is much harder than talc or gypsum, though. American Indians, Inuit and other aboriginal people did and still do make arrowheads and harpoon points out of it. As far as carving it goes, you _can_ carve it, by hand, with any metal tool, but it carves much easier with a powered tool, like a Foredom or Dremel. While being hard, it is also brittle, and will chip and crack if you stress it too much. And of course, like wood, "green" bone carves easier than dried bone. So, to answer your question...Maybe a 3 or 4 on Moh's scale...? I'm guessing, but that seems about right. -- Chuck *#:^) chaz3913(AT)yahoo(DOT)com Anti-spam sig: please remove "NO SPAM" from e-mail address to reply. September 11, 2001 - Never Forget ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
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On Wed, 23 Feb 2005 02:26:36 GMT, wrote:
How hard is bone on the mho (talc, gypsum, etc.) scale? Chris Bone is harder than most hard woods but not any worse than iron wood. I have carve a lot of Roast bones cut in half and figurines carved with my pocket knife. It takes a really sharp knife of good quality and only take small thin cuts (flakes). You can scrape just about as well cut. How much time and patience you have is a determining factor. If I am carving ivory or bone and I want faster results I will use my foredom and burrs but smoothness and clean up is harder to accomplish than if you scraped it smooth as you carve. I have lots of time so I take the hard path of carving and shaping. A lot of the figurines were touched up with a fine sand paper and steel wool and I just carry it around in my pocket and rub it to a polish with my thumb. You can polish it with a foredom with a cotton wheel and a polish such as " fabuluster" purchased at any rock shop or jewlry supply shop. (lots faster) Carved from a half round beef bone will let them stand up after you are done and I just sit them up on the shelf in my shop. |
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How hard is bone on the mho (talc, gypsum, etc.) scale? Chris
Don't know about the "mho" scale ("mighty hard objects"?), ; ) but I can tell you that it is harder than saaay, hard maple or lignum vitae. As a geologist I often wonder about the hardness of everyday objects on Moh's Hardness scale, and your typo and the resulting puzzled query really tickled me! Jey |
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The message outcrafting.com
from "Jey" jey@[EMAIL PROTECTED] contains these words: How hard is bone on the mho (talc, gypsum, etc.) scale? Chris Don't know about the "mho" scale ("mighty hard objects"?), ; ) but I can tell you that it is harder than saaay, hard maple or lignum vitae. As a geologist I often wonder about the hardness of everyday objects on Moh's Hardness scale, and your typo and the resulting puzzled query really tickled me! It also depends on the source of the bone: which animal it has come from, and from which particular bone in it. I use chisels and scrapers made from old machine hacksaw blades for bone carving, or for fine detail, made from old All-Hard HSS hand hacksaw blades. -- Rusty Open the creaking gate to make a horrid.squeak, then lower the foobar. http://www.users.zetnet.co.uk/hi-fi/ |
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On Fri, 10 Jun 2005 10:07:30 +0100, Jaques d'Alltrades
wrote: It also depends on the source of the bone: which animal it has come from, and from which particular bone in it. This is more a factor of the _density_ of the bone, rather than the hardness, though. Bone is pretty hard stuff, but even in the same animal there are dramatic differences between say, a femur shaft and a rib or scapula. Hardness is the same, but the bone has many more microscopic interstices, making it seem "softer," when in fact, the rib is just much less densely packed. Another factor is post-mortem treatment of the bone, which actually _can_ affect the hardness of the bone itself. Boiling for too long, for instance, can break down the bone structure, as can chemical treatment. -- Chuck *#:^) chaz3913(AT)yahoo(DOT)com Anti-spam sig: please remove "NO SPAM" from e-mail address to reply. September 11, 2001 - Never Forget ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#8
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On Thu, 09 Jun 2005 19:20:26 -0400, "Jey" jey@[EMAIL PROTECTED]
wrote: How hard is bone on the mho (talc, gypsum, etc.) scale? Chris Don't know about the "mho" scale ("mighty hard objects"?), ; ) but I can tell you that it is harder than saaay, hard maple or lignum vitae. As a geologist I often wonder about the hardness of everyday objects on Moh's Hardness scale, and your typo and the resulting puzzled query really tickled me! Happy to supply chuckles. Actually the typo was Chris's, and the reply mine. An amusing note: I was watching an old episode of "Friends" last night, and as you may or may not remember, the character of Ross was a paleontologist. Despairing of his third divorce in two years the only bright spot he could see was that the only people below him on the "Dating Hierarchy" would be "4 divorce guy, murder guy and, of course, geologists." It caught my ear because my brother-in-law has a geo degree, although he works in a museum now. -- Chuck *#:^) chaz3913(AT)yahoo(DOT)com Anti-spam sig: please remove "NO SPAM" from e-mail address to reply. September 11, 2001 - Never Forget ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
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