Or you use harde wood for the keel elements - f.e. in pear the paint is not so deeply permeate.first test painting. have to find another paint.
i still havent decided to build the ship on 1:72 or 1:64 scale. i like 1:64 more and more.
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On my last model I tried to use ecoline and was not happy with the result, not because of the paint, but small inaccuracies in the joint are more visible.
So for myself I decided, that I will not make any painted joints at the keel elements - especially there was in real also no caulking of these joints