Hi MaartenHi Nigel,
Do you know if the colouring used for the veneer is UV resistant?
I know with a lot of dyes UV resistance is a problem if they are not pigmented.
Schmincke has a series of pigmented ink called aero colour which are UV resistant.
AERO COLOR® Professional
Seit vier Generationen ist Traditionsziel des Hauses Schmincke die Herstellung von bestmöglichen, feinsten Künstlerfarben.www.schmincke.de
The varnish I am using has UV protection in it. The red bulwarks on my Sots is the same product and is the same colour as when I fitted it ten years ago so no concerns
Kind Regards
Nigel