After a long time of absence I have made some progress. I decided to make the complete sets of French periscopes for my B1-bis as well as my Somua models. It starts with the basic shape being built up from templates.
When the glue has dried the excess plastic is removed and the shape refined.
The hinged portion is built up from scrap.
It looks rough but gets sanded down when dry.
Slowly taking shape.
Here it is taking on the final shape.
A sample fitted inside the turret to see how it looks.
A detailed close up.
Here are the nine periscopes, six for the Somua and three for the B1-bis.