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Thread: how do I mill a rail for a pump rod?

  1. #31
    Join Date
    Oct 2004
    Location
    Mt. Pleasant, SC
    Posts
    2,208
    Quote Originally Posted by Laku View Post
    Should be, at least close enough. Friend of mine made few rails for me and himself with that as reference.
    It's been tested with rainman's older pump kit on a rail milled with that reference and on a rail that Luke milled to spec (and which it is currently using).
    rainman did not machine to agd spec.

  2. #32
    Join Date
    Nov 2012
    Location
    Finland
    Posts
    925
    Quote Originally Posted by captian pinky View Post
    rainman did not machine to agd spec.
    I know. But Luke did.
    And that's one of the earlier rainman kits which does seem to be close enough (and works much smoother than AGD original I got).

  3. #33
    Join Date
    Jan 2001
    Location
    Cottonwood, Az.
    Posts
    7,191
    I've used this fixture on my knee mill and cnc.

    Click image for larger version. 

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  4. #34
    Join Date
    Feb 2007
    Location
    Fredericksburg, VA
    Posts
    1,272
    That's clever. It holds the rail at an angle for the channel cut, right?

  5. #35
    Join Date
    Jan 2001
    Location
    Cottonwood, Az.
    Posts
    7,191
    Yes.

  6. #36
    To pump mill....I use my teeth, a butter knife and an oring pic...but I'm old school.....LOL!
    The I send it to Luke to fix...and buy new dentures...
    AGD is in the house!
    Custom gun builds. All the parts. New Website. Factory Service available!
    www.airgundesigns.com

  7. #37
    Join Date
    Jan 2001
    Location
    Cottonwood, Az.
    Posts
    7,191
    So which route did you go, angle vise of fixture?

  8. #38
    Join Date
    Feb 2007
    Location
    Fredericksburg, VA
    Posts
    1,272
    Quote Originally Posted by luke View Post
    So which route did you go, angle vise of fixture?
    I haven't gotten around to it yet, sadly. Hopefully this will happen in the next week or so. But I don't have an angle vise, so I'm probably gonna try the fixture.

  9. #39
    Join Date
    Jan 2001
    Location
    Cottonwood, Az.
    Posts
    7,191
    Here's how I set up to machine my fixture.

    Tram your vise.
    Square your material in your vise with machinist square.
    Set the proper angle.
    Machine top of material.
    Drill and tap your holes to AGD rail spec.
    Machine the rail bushing hole.

    *I drill and tap my holes on the fixture with my work offset coordinates in mind (XYZ-Zero) so I can setup the job off the fixture instead of off the rail being machined.

    Click image for larger version. 

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