Circular hole pattern

by Jon Robin

Jan 11, 2017

Hi! I´ve been trying to figure out how to create a circular pattern similar to the one used on the Nest smoke detector:

I´m trying to create a similar pattern on a 3d object I made (below). I can't figure out a way to conform the circular cut  pattern within the boundaries of the surface marked in yellow. I was only able to create a cut pattern using the outer edge as an attractor curve, but still, it was based off an UxV grid, so the holes didn´t conform nicely near the rounded edges or the extruded pipe in corner... 

If anybody can shine a light in the right direction for me, I would be very gratefull!

Thanks!

  • up

    Laurent DELRIEU

    Hello,

    I tested it with a log spiral, but holes are indeed on an arc of circle. 

    3

    Jan 11, 2017

    • up

      mark zirinsky

      To my eye, it appears that the next pattern is using discrete hole sizes, made by, for example, 4 or 5 different drill sizes. So, if you takes Laurent's results, take that series of holes, then assign these to 4 or 5 ranges of hole sizes, then that might be closer to the next pattern. Foe example, all holes 0.090 to 0.110 diameter get made by a 0.110 drill, 0.111-0.142 get made by a 0.125 drill, and so on.

      1

      Jan 11, 2017