Wow, thanks for the really generous offer, I think I'll probably be taking you up on it one I figure out all the parts I need.

I had noticed that metals4u were expensive but I hadn't started comparing prices yet. I checked out metal superstores as someone recommended them, the total order cost was less than a third. The downside is that metal superstore essentially don't deliver, it is technically possible to get stuff delivered but their maximum weight is so low I'd need to place about a dozen orders!

Thanks again