[Jewelry making - Article 01271] - Re: [Orchid] Diamond Impregnated Tools

[R . E . Rourke]

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    there are no dumb questions on Orchid..its about learning.. 

    Sintered diamond tools are the creme of the crop..the diamond is
    bound to the metal by heating the metal to the point of --uh,
    sintering..at which time the diamonds are partially embedded into
    the metal due to the high temperature and when worn down a bit from
    use a new surface of diamond is exposed and available to cut - these
    last longest 

    Electroplated diamond is what is available at most home stores.the
    diamond is surface bound to the metal in a variety of ways, but when
    it pops off it is gone..these are the mid priced and cheaper
    products they last perhaps, half s long as sintered laps,burs,
    cut-off wheels etc. 

    diamond coated products are what one finds at flea markets, harbor
    freight tools, and box lots from Chinese sources.this is the
    leftover industrial diamond usually applied with an epoxy based
    coating or lesser. the diamod is very uneven, the grits are usually
    mixed, and you could make your own with more efficacy than those
    tools can gie.next time you are at a flea market for instance look at
    the wet/dry diamond saw blades- you can see with the naked eye the
    sparse coating of particles on the surfaces..recently there ws an
    Orchid thread ( or SNAGNET??) about making ones own laps and cutting
    wheels with diamond spray and used wet/dry tile cutting blades...Opal
    cutters are fond of making their own, and anyone can make useable
    excellent performers with this method of applying diamond spray in
    various grits to various substrates to get a desired result- they are
    inexpensive,great to keep in mind for an electrical stormy day when
    one really shouldn't be using power anyway! 

    i hope this gives you a very basic idea of the differences in
    industrial diamond application methods.
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