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Thread: Arbor for reducing washers OD

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    Frank S's Avatar
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    Arbor for reducing washers OD

    I occasionally need to reduce the OD of shim washers. ordinarily If the inside Diameter is large enough I could simply chuck on the ID with a small 4 inch diameter 3 jaw chuck in the clutches of the 14 inch diameter chuck on my smaller Leblond lathe. However with so much of my stuff packed away for our move I couldn't lay my hands on the little used 4" chuck.
    I needed to turn the OD of a couple of .062" thick 1.625" ID shim washers.
    I had a 1 1/2" bolt laying around with 2 nuts so I tapered one side of each nut then chucked the bolt with 1 of the nuts screwed on leaving enough so the washers and outer nut could be screwed in place. This worked just fine since I didn't need a perfect concentric ID to OD
    Arbor for reducing washers OD-20160923_165245c.jpg Arbor for reducing washers OD-20160923_170942c.jpg Arbor for reducing washers OD-20160923_171419c.jpg Arbor for reducing washers OD-20160923_171441c.jpg
    Never try to tell me it can't be done
    When I have to paint I use http://kbs.justoldtrucks.com/

  2. The Following 4 Users Say Thank You to Frank S For This Useful Post:

    Glueman2 (07-19-2017), jjr2001 (10-04-2016), Paul Jones (10-03-2016), PJs (10-08-2016)

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    Paul Jones's Avatar
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    Frank S,

    Thanks for the posting your method for reducing the washer OD. I have made several threaded mandrels for this type of work but these only fit a specific washer IDs. Using your design will allow the mandrels fit a much wide range of IDs just by adding the tapered nuts.

    Thank you,

    Paul

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    PJs (10-08-2016)

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    Frank S's Avatar
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    Paul using a mandrel like this when only doing 1 washer at a time of any ID that can be confined on the taper you can use a piece of tubing against the face and the outer nut to hold it . As long as the tube has been machined true to both ends a decent concentric ID to OD can be expected
    Never try to tell me it can't be done
    When I have to paint I use http://kbs.justoldtrucks.com/

  6. The Following 2 Users Say Thank You to Frank S For This Useful Post:

    Paul Jones (10-04-2016), PJs (10-08-2016)

  7. #4
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    Thanks Frank S! We've added your Arbor for Reducing Washer OD to our Machining category,
    as well as to your builder page: Frank S's Homemade Tools. Your receipt:




  8. #5
    PJs
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    Yes Sir, Fine idea and may have to use it...seems I'm always hunting through the used washer tin to find something that's not quite what I need. Very Cool Frank, Thank You. ~PJ


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