Modelling perforated brake rotors

I need some help on modelling brake rotors, more specifically the perforations. Any help would be greatly appreciated.

I think curves are best. There is a German tut for it (pictures doesn’t need translation and the first 5 pages are about curves). It is basically only about circle layout.
http://www.eofw.org/eofw/tuts/brakedisc/brakedisc_tut.htm

Or this one? http://blenderartists.org/forum/showthread.php?t=88667

There is a search function, do you know?

Myn.pheos
Thanks, I was looking for that exact tut. but wasn’t looking in the right place.
Much appreciated.

How about modeling a slice of the disk then using an array modifier ?

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One of the stickies in Modeling is called Selected Modeling Threads. Check it out. It’s got links to threads where this exact same question has come up before.