Hello twobob! Not at this stage I'm afraid, although I'd be happy to share some plans etc with you when I get round to designing it. I'm still trying to organise some raw material at this stage. MSC looks like the best bet so far. This is the lock I'm going to use as a basis for the design (Cptn Curls beautiful Rigby 360 Double...hope he doesnt mind me pilfering a pic!).

Tenn, I have a look on Ebay for sure.