Hi bemfarmer,

> I have been unable to twist or warp a Planar rounded rectangle
> derived from a NON-Solid rounded rectangle, after several dozen tries.
> Cannot seem to get rid of the extra control points.

Could you please post the file with your rounded rectangle in it that you're having a problem with?

One particular thing to note with this method described previously is that the thing you actually warp is a surface that you construct from the curve. Either draw in a plane surface and trim it with the curve or use the Construct > Planar command to build a planar surface from it.

Once you have that surface you delete the curve and then select the surface and turn on its control points with Edit > Show pts and manipulate those 4 surface corner points.

See these previous links for some illustrations and additional explanation of this method:

http://moi3d.com/forum/index.php?webtag=MOI&msg=1588.2
http://moi3d.com/forum/index.php?webtag=MOI&msg=909.5

If you're still having problems please post the 3DM file with your geometry in it so I can see where in particular you may be getting stuck.


> Ended up with several circles on the chain link... because ?...

You mean the edges inside of the chain link? That's most likely because your path curve is made up of several sub segments. If you select your path and use Edit > Separate it will break it apart into individual segments and you should see that each segment of your rail path corresponds to one piece of the generated sweep.

That's not really anything to be worried about - that's normal to have a result like that.

- Michael