Mailinglist Archive: opensuse (729 mails)

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Re: [opensuse] Fibre speed [Was: raid use case]
On 06/01/2015 08:15 PM, Per Jessen wrote:
diamond-tipped bits
- believe the stuff used is called "Crushing Boart" [ not that expensive ]

{ - as wikipedia says : "Bort or boart is a term used in the diamond industry to refer to shards of non-gem-grade/quality diamonds. In the manufacturing and heavy industries, "bort" is used to describe dark, imperfectly formed/crystallized diamonds of varying levels of opacity. The lowest grade, "crushing bort", is crushed by steel mortars and used to make industrial-grade abrasive grits. Small bort crystals are used in drill bits. The Democratic Republic of the Congo provides 75% of the world supply of crushing bort" }

............

regards

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