worth it though... when im designing something with production in mind i can spend hours just looking at the same drawing to see if it can be stream lined or knock some of the pain out of production and make it look posh etc etc etc....
Certainly is I find it usefull for visualising what somethign is going to look like. Gives you an idea whether it's going to work or not. Also use it at work to draw 3D (without having to get the DO involved) pics of what I'm quoting. Just starting to build up a library of standard parts. Slow progress tho as it has to be done in lunchtimes etc and I'm still trying to get into it....