Nice work Phil,
It's great that Simon has helped with the 3D stuff, I agree with Micheal regarding the progress in computer generated development and laser nesting and cutting, it is the only modern way to remain commercially competitive, you can do in seconds what previously took hours. As you know I am a time served Sheetmetal worker and the development of these shapes by hand is not too difficult, simple triangulation would be the way to go, just don't lose your 'place', Draw the plan view, section the top and bottom, number the top and letter the bottom or vise versa, step out number to number, letter to letter, but triangulate number to letter over the height to establish the true lengths, if symmetrical, then work out from the centre line to halve the work and away you go just keep plotting......easy really..... it's time consuming but 45 years ago we had little choice. now sadly it's becoming a lost art, as was getting the marking blue from around your fingernails.
Well done all, great camaraderie, great modelling.
John