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Here is a thread on Tantung® from a long time back where I asked about the Tantung.......
http://www.bladeforums.com/ubb/Forum12/HTML/000532.html
I am still wondering about the softer center. and the sometimes a bit pourous core, has been addressed by the Tantung® manufacturer.
Tantung® worked well for any cutting tool ground from the end like box tool, cutoff, shave and dovetail tools. The shave and dovetail tools were cast roughly to shape so only a little material was ground off the outside surfaces to finish them for close tolerance work.
Any tool bits like flat form tools where the material had to be ground from the side when resharpening had a very short lifetime due to the softer center in the Tantung®.
When I used it in the shop it came in 2 grades. Tantung-G® & Tantung-144® I think it was.
The Tantung-144® was a little less heat tolerant, but had more shock resistance IIRC.
Anything cast in the proper shape of a knife would work fantastically I believe.
And the makers of Tantung® back then offered the castings to shape as well and IIRC it was due to the same concerns I am asking about here.
It will be interesting to see how it all turns out.
And I sure wish I had kept all the info I had on the Tantung products when I retired, but a man can only keep so much paper work.
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"VEGETARIAN".............
Indin word for lousy hunter.