Trying to create a helical pattern on a sphere. Typically for something on a cylinder using a curve driven pattern the face normal is constant, but in the case of a sphere the face normal is constantly changing. Any thoughts on how to create a curve driven pattern on sphere, keeping the features normal to the sphere?
Any help is appreciated.
Thanks,
Scott
Deepak,
You can do that and create the variable helix fine, but it still doesn't solve my problem of trying to do a curve driven pattern and pattern some features around the helix on the surface of the sphere. Not sure if I am missing something. See if you can create some non symmetric feature and create a helical pattern on a sphere.
Thanks for input.
What problem are you having? You can't create the pattern at all? Or the orientation of the pattered components is wrong?
I took a hint from this discussion: Curve Driven Pattern Problem
See my attached example. If you are unclear about anything I can explain more.
I somehow got it to work using the surface of the sphere as the face normal. I think something between the two features wasn't working out initially, because I was able to create with one feature but not both but now seems to be ok.
I definitely like your idea Jamil of creating that surface ribbon to use as the face normal. Although I didn't need it on this one, I definitely have to keep that in mind if that works. Thanks for your help.
Jamil's method was what I had suggested you from the video.
I didn't see the video, but I got the method from the discussion post I linked to. So either way it wasn't my idea
Deepak,
It's different. The video just shows taking a helix and creating a surface sweep to create a surface helix and then intersecting it with the square profile to create a helical 3D sketch that is from the intersection of the two.
Jamil did that (which I am familiar with), but after that he created a vertical line (normal to sphere) and did another surface sweep to create another helical surface (ribbon). this helical surface is normal to the sphere at all locations and he used this surface (ribbon) as his "face normal" in the curve driven pattern feature.
I hope I explained this well enough to follow.
I appreciate all the discussion though.
Agree and I like his idea too.
I am a member of a number of user forums, for software, machinery, etc, but I must say this is the most polite and respectful of all of them.
Nice,
Bevin
Create the helix with varying dia/pitch and use than for the curve driven pattern.
OR
use the method suggest here Rectangle Spring by TON-MODIFY - YouTube Use the sphere and helix to create a 3d sketch around the sphere. And then use that for pattern.