Quote Originally Posted by Makar View Post
The straightening is fine and dandy with this method, it's just the potential for discolouration. I have started polishing the black plastic now to try and get rid of the milky colouration created. It isn't shifting much as yet.

Yikes! That milky discoloration will be difficult to polish out… the plastic is not celluloid, it’s more recent (and slightly more brittle) once used to make to make combs.
I have a scale that looks black but if you shine a bright light (a very bright light) through it will look toffee brown with black swirling.
When I put it in boiling water the surface turned milky white and it took my fingerprints when touched.
Does it have any inserts? Or other decoration?