[Jewelry making - Article 00209] - Re: [Orchid] Replace the chuck on a low end bench drill press?

[Al Anganes]

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    Christine, Are you sure they did not say "J3" taperor "JT3" or "3JT"?
    That would denote a #3 "Jacobs taper" That is a standard designation
    for a chuck taper, you will find that in any of the catalogs you
    mentioned. 

    Not sure if that is so, but it would be my guess. I'm not familiar
    with that particular drill press, but you could always remove the
    chuck and measure the taper. Dimensions would be found in a copy of
    the machinist's handbook, or in any number of other sources either at
    your library or on-line. 

    Hope that helps, Al in Dracut, MA  

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