Quote Originally Posted by Doddy View Post

To the OP, Fusion 360 is a good 3D CAD modelling tool, which, as discussed, can be got for free. Don't underestimate the learning curve associated with it, however, although it's time well invested if you do a lot of modelling. I've tried Sketchup in the past and, to be honest, wouldn't piss on it if it was on fire.
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Thanks for the pointer, I'm interested in fusion 360, but the only free download is only for 12 months. Having talked to a few folks it's definitely the better product, but reluctant to spend a lot of time learning something if i only get to use it for 12 months .

I find Sketchup frustrating in that the menus seem to be endlessly re-written so good advice is difficult to get, but at least I have a licence to work with .