[Jewelry making - Article 00188] - Re: [Orchid] Burs tips and techniques?

[Soul Of Wood]

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    also you must ride your burr smoothly on the surface of metal, with
    as little chatter as possible, especially with carbide, which will
    chip, take light cuts, also other alloys and coatings work well,
    twist drills are excellent cutters, but it is important to get
    quality steel, always, it is also important- very necessary to put
    an optivisor on and sharpen (learn to) your drills with either a
    stone barrel (for cutting steel or a  separating disc in a flex
    shaft), just try it with  magnification, by copying what was already
    the point of the drill, don't go over center and you will get it in
    no time(practice on old drills, first large then small, with mag.),
    oh yea read a machinist's drill sharpening pamphlet, 

dp


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