Small mystery arbours, strange taper size, help identify?
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  1. #1
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    Default Small mystery arbours, strange taper size, help identify?

    I forgot where these came from and have no idea what machine they fit.
    Before I list them on the sale forum I would appreciate if anyone can identify them for me.

    The taper is approx .875 at the large end and about .640 at the small end. A search for that size taper had no results. The thread measures at 9/16-12.

    There is a 7/8” stub arbor and a very small 1/2” shell mill holder and a combo straight/45° X 1/4” square boring tool.
    Attached Thumbnails Attached Thumbnails 3fb396f6-ddcb-47c0-9666-8d4642cbe551.jpg  

  2. #2
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    They look similar to Dumore spindle adaptors for a toolpost grinder.


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