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  • Users: RooneyJC
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  1. RooneyJC

    Machining Delrin to high Flatness and Parallelism

    Hello All I need to machine a plastic piece that is rather thin with high flatness, parallelism and surface finish callouts. I was thinking of lightly thinning some stock high-maintainability Delrin. See the drawing below: http://imgur.com/igV3fsB The piece is 190mm X 100mm. Now these...
  2. RooneyJC

    Question about dimensioning with center-plane datums

    Hello, I'm detailing some parts to send out for fabrication. A lot of the parts are shaped like plates and have symmetric features. Because of this, I tend to set up my datum reference frame using the longest surface as my A datum and my B and C datums as center-planes. I was told at my first...

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