I'm currently showing a group of software users how to create complex 3D reliefs in our CNC routing program. I wanted to present a real challenge, so I went back to a sign I had created quite a number of years ago. The little fish boat on the Shymer's Harbor sign looks deceptively simple but actually uses many different rather complex functions of the software. The thing is I had to remember how to do it myself first. As I practiced creating the file I remembered the struggle I had back then because then I was just learning the software myself. But now, after over a decade of practice I found it was easy. But tomorrow as I teach I will have to have a lot of patience for most of those I am teaching are trying this stuff for the first time. It's going to be fun!