What do I do with yellowing resin?
I’ve heard mixed experiences with using yellowing resin. I have heard it won’t cure or that it will only get deeper yellow when cured. I also read the opposite — that it gets less yellow when cured. Having some 1:1 epoxy resin with yellowed hardener on hand, I thought I would test it out.
This is my resin with the very yellow hardener getting mixed:
Time to break out my favourite ghost mold!
Here they are cured. Both the ghost castings with colorants are perfect! No trace of a yellow tone at all and they cured perfectly. As expected, the clear casting stayed yellow. It didn’t appear to get darker or lighter as compared to before casting.
This was a fun experiment and it’s good to know that I can still use resin even when it’s yellow.