Really neat solutionWhat an inspirational thread! Thanks to @oldmpf and @Prince of Darkness I was lead here and it made me think could I fit a Personna 74 in a Sun Ray?
The 1912 is different from the TTOs and it needs something to hold the blade against the stops so here’s an adapter:
View attachment 836017
It’s two layers of plastic of differing lengths in a GEM spine (I tried three layers of plastic to sandwich the blade but that’s too thick for the head to snap shut).
The first layer is slightly shorter than a GEM blade so the Injector blade can rest on it with the cutting edge exposed.
The second layer is the length of a GEM blade minus the length of an Injector blade to hold the Injector blade against the stops.
Kool and the Gang