Thanks,

I have a circle I'm trying to trim with two points. Here is the file you requested regarding the other issue. This works in rhino. If you select one side of the airfoil curve and do a two rail sweep MoI won't sweep the arcs, just the spline. I have tried a few different things but I can't get it to sweep the leading and trailing edges of the airfoil. You have to zoom in a lot to see the trailing edge, its very small. I have it set up exactly like rhino has to have it. I had to fight a lot with rhino to figure out what it needed. I'm fine with having to do it a different way, but I made the file to make it as easy as possible for you to see what I mean.

Anthony

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