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Thread: clamshell catches

  1. #21
    Site Supporter ProtoTipo's Avatar
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    Re: clamshell catches

    I'll report back, once I've got some parts.

  2. #22
    SEC Member LM mic's Avatar
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    Re: clamshell catches

    Quote Originally Posted by ProtoTipo View Post
    I'll report back, once I've got some parts.
    Hello Chris
    Yes !!! if you could do sort of quick "tutorial " or pics with advises will be great !
    Many thanks in advance !!

  3. #23
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    Re: clamshell catches

    A good find. Are they stainless?
    An alternative would be ejector pins from the injection moulding process ( as suggested by Mick for hinge pins originally), as these come in a fantastic variety of lengths and diameters.
    It occurred to me that they could be secured with grab washers, but these book binding pins are probably prettier if they can be made to work.

  4. #24
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    Re: clamshell catches

    Says nickel plated.....

  5. #25
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    Re: clamshell catches

    Plan B, could be to cut the end (along with the split pin hole) off the end of one of these:
    http://www.ebay.co.uk/itm/BARTON-Pac...IAAOSwJSJXGNnc
    which at 39mm would be over length. Then machine a groove in the lathe for the proper OE circlip.
    Cutting the grove is one more job to do though.

  6. #26
    SEC Member LM mic's Avatar
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    Re: clamshell catches

    Houuuu ?
    Doing such tiny groove would be a challenge ; you need avery small leathe and very fragile cutting tool ......
    Would it be easier to cut shorter and drill/tap the end ?

  7. #27
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    Re: clamshell catches

    A hacksaw blade in the toolpost?

  8. #28
    SEC Member LM mic's Avatar
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    Re: clamshell catches

    Quote Originally Posted by john View Post
    A hacksaw blade in the toolpost?
    Yes good idea but need to be slightly grinded because an hacksaw will be thicker than necessary ; those circlips are really very thin !!!
    Last edited by LM mic; 21-12-2016 at 14:42.

  9. #29
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    Re: clamshell catches

    Quote Originally Posted by john View Post
    A hacksaw blade in the toolpost?
    I'm no machinist, but I'd grind a tool to the correct width, put an OE pin in the chuck and record the depth, then cut the groove to that depth on the replacement pin.
    These binder pins will probably do the job though, so it won't come to the above.

  10. #30
    SEC Member LM mic's Avatar
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    Re: clamshell catches

    Chris this is an idea for you to be sure to do the groove onto the right place ( and also to be able to hold the pin on the mandril)
    Its a two part one ( but can be in one part only and cut only half lenght to press firmly the pin)

    Click image for larger version. 

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    Click image for larger version. 

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    With the tool cut you will grind you just need to "tangeant" the small face of this tool jaw ( which length have been done properly ) so you are sure to cut the groove on the right place

    Hope this helps
    Last edited by LM mic; 21-12-2016 at 19:41.

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