You could ask the Royal Armouries Museum, Leeds if they have the original engineering drawings for the woodwork and could you have a copy, please. I would suggest stating that it would just be for your personal use and not for any commercial venture. They most likely will not be able to help but it's worth a try.
Information
Warning: This is a relatively older thread
This discussion is older than 360 days. Some information contained in it may no longer be current.