topic Re: How do I get this shape? in Modeling

How do I get this shape?

Anonymous — Sat, 19 Sep 2009 00:34:10 GMT

The part circled in red.

Re: How do I get this shape?

Dwight — Sat, 19 Sep 2009 01:46:13 GMT

Make the entire post with a revolved complex profile [as a wall]

Flatten the faces with a Solid Element Operation

Re: How do I get this shape?

Anonymous — Sat, 19 Sep 2009 01:52:46 GMT

Thanks, Dwight. I'll give that a shot.

Re: How do I get this shape?

Dave Jochum — Sat, 19 Sep 2009 04:35:04 GMT

At the risk of appearing to be a shill for Cigraph (second time I've plugged their products tonight ) I like using ArchiForma for tasks like these, but it's not hard to accomplish as Dwight suggested.

Re: How do I get this shape?

Dwight — Sat, 19 Sep 2009 04:56:09 GMT

what about the cutout?

Re: How do I get this shape?

Anonymous — Sat, 19 Sep 2009 08:37:20 GMT

What am I doing wrong? What I keep getting is inside out.

Re: How do I get this shape?

Anonymous — Sat, 19 Sep 2009 08:45:08 GMT

I got it figured out now. I got to do sort of inverse of what I want.

Re: How do I get this shape?

Dwight — Sat, 19 Sep 2009 08:47:49 GMT

It is almost impossible to draw a circular wall with no radius, so you need to
put the complex profile fill on the "outside."

Flip the fill so that the origin side is the outside of the post.

Draw the post to the correct radius — small enough so that there is no hole down the middle.

Re: How do I get this shape?

Ralph Wessel — Sat, 19 Sep 2009 14:55:08 GMT

Wrathchild wrote:
The part circled in red.

Take a look at this post.

Re: How do I get this shape?

Ralph Wessel — Sat, 19 Sep 2009 15:37:40 GMT

Dwight wrote:
what about the cutout?

You could do the following with OBJECTiVE:

1) Draw the curved profile of one facet in the post and make a new profile with OBJECTiVE->Component->New Profile (profile shown in 3D).
2) View the profile in elevation (or use OBJECTiVE->Tools->Rotate to lay it flat in plan) and use the Bend tool OBJECTiVE->Tools->Bend to curve it inwards.
3) View the profile in plan again (or rotate it upright), and cut a triangular wedge out of it with the Split tool OBJECTiVE->Tools->Split
4) Multiply it around the full 360 degrees, and use the Split tool again to chop off any unwanted remainder.
5) Finished result in 3D