Optimal way of creating a circular pattern like this about a point?

[haggarwalUS3A5]

Sorry about the vague title. Couldn't think of something better

Please see the attached image and files.

I want to have this cylinder with triangle holes in there. The orientation doesn't matter, it's just that all traingles should be same (same side lengths and angles) and they should have consistent spacing among them.

I am pretty sure the way I did it is far from optimal. I created like 10 sketches, extrude cut them and then repeated the pattern. It was hard to get the spacing right (it still isn't right). Plus if I have to change the total area of holes (think of this as a duct), I have to kinda do it all over again

What is the optimal or at least a significantly better way to do this?

[davebYYPCU]

I think the difficulty you have, is that the patterns are divisible by 5, (40,20,10,5)

The triangles are 60 degrees, so the patterns divisible by 6, is going to allow parallel wall thickness.  (42, 36, etc.)

If it were me, I would trial a 60 degree slice, then finish the whole cylinder with a 6 pattern.

My 2 cents....

[chrisplyler · Accepted solution]

I would do it all in one sketch. I would include only the triangle(s) of each row required to produce a circular pattern from. For some reason the forum's REPLY page doesn't show the field for attaching a Screencast video as it usually does, so here is a link to it: https://knowledge.autodesk.com/community/screencast/6e2740a4-3b79-4eea-a108-e4f297b1fbde

[haggarwalUS3A5]

Thanks for the reply! That does look like a good solution for but unfortunately I have moved on from that design. I did learn so that's good!