I’ll second that- BIG thanks for sharing.
I’m amazed you had a brochure, and even more amazed to see a pic which actually shows the frame being machined!
Have to admit a smug sense of relief to see it was done on the same vertical mill as the door!
I didn’t know for sure but figured that’s how it would have been done.
Thanks to dicey as well- few pics of the door ever give a sense of it’s size- that side-on pic with the guy stood next to it is amazing and I haven’t seen it before, so thanks for sharing as i I forgot to say in the message 🙁y):