Hi Andy,

re:
> The problem is not extruding, it is how to do the boolean diff if I cannot select the extruded text.
> I.e. after it has been extruded and positioned where I want it.

Can you please post a .3dm model file with the extruded text that you are having difficulty selecting? Then I will be able to show you some possible techniques.

But my guess based on your description is that the easiest is to probably use the Edit > Hide button when you are at the stage of the boolean where you want to select the extruded pieces. That will hide the base object so it will be out of the way and you can then see the extrusions easily to select them.

Another way to do it is to use some window selections.

I do have some ideas on making this kind of embedding operation to be easier in the future, either with a "depth limiting" option in the boolean command or with an automatic boolean incorporate into the extrude command when you have curves and also a base solid selected. That's something pretty high on my list to figure out after v4 is wrapped up.

- Michael