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