Tin Falcon--I worked on a drafting board for 32 years. Then, due to circumstances beyond my control, I had to start working on a computer. I sweat blood for two years straight leaning AutoCAD 13 (Verifiably the most horrible cad package Autodesk ever put out). By the third year, just when I was beginning to get comfortable with 2D, everyone wanted work done in 3D. And---surprise!!! Going from 2D to 3D wasn't really that difficult. Now that I had learned the secrets of drawing something in 2D on a computer, it wasn't a huge step to take that 2D sketch and extrude it into 3D space. Of course that was 20 years ago, and I am still learning new tricks in 3D but I know how trying to make the computer do something it should do but won't can have you running in circles and biting yourself.---Brian