clegg/michael. I dont seem to grasp all in your last 4 related posts--could you help, maybe graphically, explain please?
(Probably me having another "brian" day!)

Hi Brian, see if this helps:

The most basic way of using extrude (which I think you are already familiar with), is to select a curve like this:



Which then after extrusion will result in an object like this:



However, if the curve is not a flat planar curve, it won't become automatically capped at the top and bottom when doing the extrude.

There is another way that you can use extrude instead of using a curve as the initial object. It is also supported to use a surface as the initial object, like this:



After extruding, with that surface selected as the input, this object will be created:




That type of extrusion will always have a cap even if the starting surface was not planar - this is because MoI is able to make a copy of the starting surface to the other end to construct the cap in this case.

Does that make sense?

- Michael

Thanks Michael--I still can not get the working connection for doing the type though?

I tried doing a sweep of a horizontal/vertical curve to create a cutting surface as in attachments. I think this is not what is meant though either.

Hi Brian, it would go something like this:

Start with text that are curve objects (not solids), flat on a plane:



Now a curved surface over top of them:



Then select the surface and run Edit/Trim - pick the curves as the cutting objects and at the "select pieces to remove" prompt, just push "Done" or right-click to keep all the pieces. This will cause the surface to be sliced up into multiple different surfaces.

Select the inside surface pieces:



Then those can be extruded just like I was showing in that previous post:




- Michael

seems there was yet a thread about that some times ago :)

Thanks Michael---I was def not thinking like that!
Added to my Help file folder.

I hope this shows my thick scull is learning!

And!

Fine kangaroo!