Another update:
The rib tapes are home made decals - a CDL oversprayed over the clear decal sheet. I need over 180 rib tapes, so a lot of cutting lies ahead...

They are CDL as Ray Rimell suggested.

I have also started to work on Mercedes VIa engines - cylinders needed separating they were cast as one element. The inlet manifolds are wrapped to simulate the asbestos tapes
