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Number of points

I was wondering if anyone has any sort of rule-of-thumb about how many points to take on diameters. I know that varies for size and/or maybe what kind of tolerance on the feature. I mean, I know how many hits I usually take on certain features and what works for me, but is there any sort of stuff out there that talks about recommended numbers of hits for features? Just wanted peoples thoughts on this...
Parents
  • I learned a rule, long time ago, that says (3*number of hit which defines the feature) minimum :
    Line defined by 2 points =>6 hits mini
    Circle and plane defined by 3 points =>9 hits mini
    Sphere defined by 4 points =>12 hits mini
    cylinder defined by 5 points =>15 hits mini
    Cone defined by 6 points =>18 hits mini
    That rule doesn't give enough hits to define the form, only the size and the location.

    Another rule that I read here is to take an odd number of hits.
    To match with the previous it gives :
    Line =>7 hits
    Circle and plane =>11 hits
    Sphere =>13 hits
    cylinder =>17 hits
    Cone =>19 hits​
Reply
  • I learned a rule, long time ago, that says (3*number of hit which defines the feature) minimum :
    Line defined by 2 points =>6 hits mini
    Circle and plane defined by 3 points =>9 hits mini
    Sphere defined by 4 points =>12 hits mini
    cylinder defined by 5 points =>15 hits mini
    Cone defined by 6 points =>18 hits mini
    That rule doesn't give enough hits to define the form, only the size and the location.

    Another rule that I read here is to take an odd number of hits.
    To match with the previous it gives :
    Line =>7 hits
    Circle and plane =>11 hits
    Sphere =>13 hits
    cylinder =>17 hits
    Cone =>19 hits​
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