Thread: 2 bladed razor

Greetings! My next strange project is to construct a 2 bladed razor reproduction as some from antiquity which I have seen pictures of. Such an example is in the first picture. I have procured 2 identical Sheffield England razors as shown in the 2nd pic for using in this project.
My question is this: Is there anyone who has examined a 2 blader so as to advise me on the construction of the bottom wedge? There seems to be a need for a design which keeps one blade secure while shaving with the other. A divided wedge of sorts?? Trying to make it as authentic as possible! Any advise would surely be appreciated.