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Recent content by franhd

  1. franhd

    Basic Dim on Series of Holes

    Thanks Jassco! Mech1595: I could also do it that way, the problem is when it gets to 10 holes or even 20 holes in a row. But I'm glad to know that my beliefs are confirmed.
  2. franhd

    Basic Dim on Series of Holes

    Hi everyone, I'm pretty sure I know the answer to this, but just want to double check here. Take the example image above, and you're asked to measure true position of all three holes, with respect to datums A | B | C. The first hole from left edge will have position measured with .500 as the...
  3. franhd

    Standards on filling holes with weld

    Hi everyone, I have a situation where the only way to weld two pieces together while also be self-locating is having holes run through both parts, and have the welder run a pin through both while welding the rest of the edges. Then I would want the welder to remove the pins after weldment, and...
  4. franhd

    Laser cut thermal pad tolerancing

    Much appreciated, Dave. I took a look at Y14.31 (undimemensioned drawings) and page 17 looks very similar to what I'd want to do. Like you specified, flat face datum is called out with an all around profile assigned. I understand in some respect it's good practice to call out basic dims as...
  5. franhd

    Laser cut thermal pad tolerancing

    Hi everyone, I have designed thermal pad cutouts for their particular components. These will just be laser cut to shape from .006" stock rolls and then applied. Because of having many variations, is there a blanket method to assign all cutouts the same profile tolerance without specifying...
  6. franhd

    Stacking Washers

    Hi everyone, I have an application for which I'm using plastic washers (delrin or nylon) to prevent dissimilar metals corrosion between an AL plate and SS fasteners in a marine environment. I'm being asked to stack SS washers on top of plastic ones. Are there standards or references that...
  7. franhd

    Leader alignment to feature control frame

    Unfortunately it doesn't. I'm sure there is a setting for it too.
  8. franhd

    Leader alignment to feature control frame

    Hi everyone, I'm hoping someone else has come across this issue before. I'm dealing with an issue where with feature control frames, the leader is attached to the center of the frame (bottom of screenshot) rather than the top or bottom edge of the frame (top of screenshot). I cannot find the...
  9. franhd

    Slot True Position Tolerance Along Length

    In the above example, I can understand how the TP tolerance of .25 is calculated using fixed or float fastener formulas, if we pretend that the narrow width has the same diameter as if it was a regular clearance hole. Where does 1.5 tolerance come from? It wouldn't be calculated as the...
  10. franhd

    Slot True Position Tolerance Along Length

    Hi all, I understand how TP tolerances are distributed by the difference in MMCs in reference to Y14.5 appendix B (fixed fastener/floating fastener conditions). When it comes to bidirectional tolerancing for slotted holes, I can speculate that you can apply those formulas to the narrow width of...
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