In a next step the bow was roughly built up with polystyrene isolation material from the local warehouse. Also a layer of epoxy was applied to the inner side of the hull to further stabilize the balsa wood.
Then the bow was sanded towards its final form. After this filler was applied and sanded. Sanding and filling was repeated several times.
To speed up drying of filler and also to applied colour layers heating was used. We also considered if we not should build a carrier based on this hull ;-)