I wanted to try out the 2 sided cut feature in Vectric Cut 3D. This turned out to be a perfect application.
My wife said she wanted a Stand-up Paddleboard. I did a little research, and then said... "I can do that."
So I modeled out a board after looking at several designs online, I couldn't find one I loved. So I took some of my favorite features, and made a 3D model.
Then to make a 12' long board like I wanted. I had to make a front and back section to cut from EPS Foam.
(my wife would have been fine with a smaller one. But according to my weight and the research I did, for me to ride, it needed to be 12' long.)
I used the doublesided cut feature in Vectric Cut 3D and made top and bottom for the front half, and top and bottom for the back. I added tabs to hold it in place durring cutting, this was more crucial on the front, as it curves up slightly, and therefore wasn't cutting a flat plane.
I finished the board with epoxy resin and fiberglass. I actually made two, because her sister wanted one too.
EDIT: here is the blog post with the file I created to make this paddle board. This is my own file, I'm sharing it for all to use: JProPaddleBoard