Technical illustration tutorial in flash

Well, I have to admit I really like tech illustrations. I've finished my first tutorial, which is very basic as far as tech illustration goes, but it's more advanced in a sense that you do have to know AI (aka illustrator) fairly well, cuz I do not explain every little-nitty-gritty details. You have to pay attention to the cursor shape to see which tool/operation is in progress. It's just for fun. I might add more details later such as how to make it realistic by adding shadows/hilites, etc.

20-40-40 Axonometric Pipe Tutorial

PS: You DO need to press the "PLAY" button to start. Someone didn't know and wondered why do I put up an image.... DUH!

Actually, this was my first tutorial but it's a little flaky so I will have to re-do it:
http://www.geocities...tration_01.html