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  1. MechCT

    parameters

    OK, here's the thing. You won't get any options with a right click on your user defined parameters if those parameters are using dimension names that you have defined yourself. So let's say you have a box with a length and width dimension called 'length' and 'width' and you have a parameter...
  2. MechCT

    parameters

    I think you just right click on the parameter and select DELETE.
  3. MechCT

    Linear or Ordinate Dimensions

    Ordinate is fine in some situations... But don't forget that sometimes your drawing will have a standard tolerance for dimensions over a certain length and you can really screw up your part by dimensioning that way if you're not careful. I think ordinate dimensioning is fine if you have a...
  4. MechCT

    ANSI Y14.5

    Here's what I would do... I would call out this surface parallel to datum A to within whatever tolerance is neccessary and then I would add a height dimension to the surface in question and add a tolerance of ±0.005 or whatever is appropriate. I don't think that I would use a profile tolerance...
  5. MechCT

    1 RFC/ECN, multiple revisions

    I think that unless the two rev'd parts are changed in a way that modifies the form, fit, or function of the assembly or are changed in a way that they require retooling or alternate positioning within the parent assembly, that the revision of the assembly should stay the same. Look at it this...
  6. MechCT

    callouts/balloons in notes

    If you're drawing is going to be used to aid assembly than I've found in the past that a brief description of the part (as in option #1) is best. But there is nothing wrong with option #2 and I would probably pick that one if I was doing a drawing that manufacturing, assy, and inspection people...
  7. MechCT

    chamfer

    ewh, I believe he's saying that if you've got a thru hole that is partially threaded that you need some indication of the depth of the thread even though the picture might show a thru hole... In which case he's correct.
  8. MechCT

    chamfer

    The way I always did my drawings was like this. First you try to fully describe the part with the views only. Than you add dimensions, notes, tolerances, etc., to further describe the part until it is completely understood. For instance. I would typically show a view with hidden lines to show a...
  9. MechCT

    chamfer

    9 times out of 10, I would use the 2X.
  10. MechCT

    file size

    I just did a survey of about 3000 Inventor part files and the majority of them were under 700k... Below is the breakdown... The file size range with the least number of files will come first followed by second smallest and so on. Of course this could be heavily influenced by the type of parts we...
  11. MechCT

    leader line convention

    Attach a leader to one of the four radii, pull the dimension off of the part, and include the text below. 4X R.25 The only time a dimension should be on or inside a part is when you don't have any other option.
  12. MechCT

    Backround Images in Inv10

    Hi, Just wondering if anyone has any interesting ideas for backround images in Inventor while modeling/drafting... I've been using one of the canned cloud images as kind of a joke at my office, but honestly I'd like to find some cool bitmaps... Something simple, but something with a technical...
  13. MechCT

    Screw Threads

    Got it, thanks. :)
  14. MechCT

    Screw Threads

    Yea, I saw that site already ctopher, when I did a google search on the subject. Unfortunetly, it doesn't tell me what the different classes are for.
  15. MechCT

    Screw Threads

    Hi I'm wondering what the class variable refers to in an ANSI Unified Screw Thread callout... Anyone know? For instance, a 0-80UNF-2A differs from a 0-80UNF-3A in what way? Thanks!
  16. MechCT

    Should i draw in Imperial or Metric???

    Well the orientation of your x y and z planes is a matter of preference I think. I don't think that either metric or imperial standards require a certain plane be positioned in a room a certain way. The way that I would personally look at it is like this... A table top would represent the x and...
  17. MechCT

    Should i draw in Imperial or Metric???

    I'm not sure what you mean when you say that metric is "top-down" or imperial is "against-the-wall" but if you're drafting a product that is going to be manufactured by, assembled by, and inspected by people who are looking for imperial dimensions than I think that you should dimension it that...
  18. MechCT

    Design View and Positional Representations...

    I apologize if this topic has been covered recently, but I couldn't find it and the seach function on this website isn't working at the moment. In any case, I've excluded a spring from my design view representation (DVR) and I've modified the mate offset for a screw with my positional...
  19. MechCT

    Yield Strength for RTV

    Arg. Nevermind... I don't think that will work because Young's modulus is just the slope of the stress curve. If I wanted to use the offset method I would need to know the value of some point along that curve, and I don't. Oh well... Maybe I can find it somewhere else.

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