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Thread: Centre drill extension

  1. #11
    PJs
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    Thanks Olderdan for the rabbit hole on that fine old iron bench machine. Lathes.co.uk had quite a write up on them. Quite a good size table for your press and would think your X axis being made from plate would keep the profile low. Do square section slides work as good as dovetails?

    Thanks again. PJ
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  2. #12
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    Quote Originally Posted by PJs View Post
    Do square section slides work as good as dovetails?
    As you can see by this screenshot there are some high precision slides made this way and may in some circumstances are easier to make for the home workshop and many have been made by a built up construction and can be easier to refubish. L.C.Mason made a small screw cutting lathe by this method from gauge plate.
    Its all down to what suits your application as which one you choose to use, dovetails are cheaper to manufacture as there are less parts but usually result in a taller assembly.
    Centre drill extension-screen-shot-03-19-18-11.37-am.jpg

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    PJs (03-19-2018)

  4. #13
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    Thank you sir! Forgot all about Rulon, Turlon, etc...pricey stuff but impressive. Also forgot about L.C. Mason's contribution to model engineering. His books are like gold now. Thanks again for all of your contributions to HMT.

    PJ
    ‘‘Always do right. This will gratify some people and astonish the rest.’’
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    If we are talking about use of box ways in amateur constructions, lets not forget about A. D. Mayo "Midget lathe"(improved - box ways instead dove tail - version of earlier one made by W. R. Bell, funny thing is that Bell's tool rest for wood lathe used box ways).
    And there is of course Dave Gingery(I prefer his description of making box ways over L.C. Mason's one - even if end result isn't as fine).

    ps. at the moment I'm working at cheap substitutes of turcite(for low end devices like those chicom cross vices or extruded aluminium compound tables you can get for 20$ or so).
    Self adhesive tapes(especially capton and glass reinforced teflon ones) seems to work fine(if there only was available linen or cotton - like in tufnol/micarta - reinforced teflon tape...).


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    Last edited by 12L14; 03-27-2018 at 07:48 AM.

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