Light Blocking

Hi ;

   I do this . I dribble melted plastic sprue of the same color in the area . When it flows into that spot then let it set up .Follow with a coat of Gloss Aircraft Grey . No light seeping through anywhere !

Forgot to mention gold paint.  Any paint that has metal particles in it attenuates or reflects light much more strongly than oxides and other compounds.  That is why they use aluminum paint to block UV from damaging fabric covered airplanes.  A few coats of clear, then one or two coats of aluminum paint and the fabric is ready for color paint.  Aluminum, copper, or gold foils are very effective blocking of light even in extremely thin foils, like gold leaf.

On the insides I use several coats of black paint and a final coat of white, some use silver. I'm not sure which works best as I've heard testimonials for both.

I guess I've been lucky. Even though I've had a few light leaks along seams they disappeared after a coat of primer and the final color on the exterior.

I really didn't know you could that but I will do so on my next build. Thank you...

How about using the silver/aluminum paint on the outside, after priming.  Follow the aluminum with the desired color.

If the light is poking through small seams where the saucer halves go together, just use a little putty to fill the gaps. Because I tend to get a little paranoid, I'll also give the assembly a light coat of primer to ensure that the putty is properly smoothed and the light leaks are repaired.

Thanks Don, I do use that method. I can seal anything I can get to but, say I am put the saucer top on the starship Enterprise, glue it together and even though during test fit it was OK but then there are minuscule light leaks and I cannot get to the spot?

Is this for stuff you put lights in?  Aluminum or silver paint is extremely opaque.