There are various methods to lift surface color from the underground.
Salt technique, hairspray technique, various expensive chipping miracle secret agents, all sorts of things.
On this model, I opted for the simplest variant:
Semi-liquid masking agent dabbed on with a sponge.
Dabbed on all relevant areas - more masking was used on the side and underneath the fuselage, where the effects of the castor oil are strongly felt - and then painted on the surface color (Tamiya semi-gloss-black with a small drop of light gray).
Immediately after painting, the masking agent was removed with pointed tweezers.
Now additional black paint was removed with a medium-hard brush and warm water.
Yes, you are right, this looks very ugly at first sight

But wait .....




..... until soon.
Servus
Bertl