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Thread: Knife Edge Mirror Mounts

  1. #1
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    Default Knife Edge Mirror Mounts

    Is any one aware of a good source of extra-fine thread set or cap head screws. The small 12x12x12mm cubes I am fabricating into knife edge mirror mounts have a pretty small lever arm and even with maxed out spacing of the 3x0.5mm set screws the best I can do is .5mrad pointing and that's with a very genital touch. That level of pointing is comparable to the beam divergence and so contributes significantly to the combined beam size. The super fine thread steel/brass inserts are too big ( and probably too expensive ). A little larger dia. and/or a little finer pitch is all I'm looking for. The few older Edmond Tech Spec value style mounts I own have these 0.25mm-0.5mm pitch approx. 8mm dia. screws directly threaded into the aluminum mount. That is close to what I'm looking for. Extra-fine taps wouldn't hurt either.

  2. #2
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    mixedgas is online now Creaky Old Award Winning Bastard Technologist
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    Thorlabs or Small Parts Inc.

    Steve

  3. #3
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    m2 fine has a thread pitch of .25mm

    Edit: A 'genital touch' might make you feel better but it won't help your beam alignment
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  4. #4
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    Quote Originally Posted by Doc View Post
    m2 fine has a thread pitch of .25mm

    Edit: A 'genital touch' might make you feel better but it won't help your beam alignment
    it all depends what beam your aligning !
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  5. #5
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    Try to locate one of these taps....warning ! not for the unsteady hand ! http://ksmetals.com/accessories.html

    I have some other sources for different taps if you need them ... I had a #4-80 but I can't locate it....guy in Greensboro has all kinds of taps and dies....only the real strange stuff though.
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  6. #6
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    Thorlabs is it. They have a good range and the associated taps. Not cheap,but then they are kinda high on their lenses too. Thanks

  7. #7
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    Quote Originally Posted by dnar View Post
    it all depends what beam your aligning o_o!
    rofl

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