Why does epoxy turn dark and do you clear the epoxy up again.

Glenn McMurrian

Mine did that. Asked the same question on here a while back, and the answer is as simple as "time." All brands apparently do it. I was advised to just use it and I followed the advice. There's so much of it in the bottle, that it looks very dark. But when you mix it with the resin (I'm assuming only the hardener part is dark) and apply it over thread, it won't even be noticeable.

...and oh by the way, if you put it on before it darkens in the bottle, it will do so on the rod. It just won't be noticeable because of the same reason above. Just half goes dark and it's too thin a coat to notice.

Just remember in the bottle you're looking through like over an inch of the stuff. The layer on the rod will only be a couple mm thick at most.

The hardener is UV sensitive and will turn amber over time, quicker with more exposure to UV rays. It happens with all brands. As mentioned above it is usually not noticeable in most cases. The exception is when coated over white, either a blank or thread.

Glenn,
If you don't want to work with dark or amber epoxy, don't buy large quantities of epoxy. Use new epoxy every 6 months and it will be less amber or dark, than if you have it for 5 years.

The same thing can be said for quite a few things where chemicals are involved. Buy smaller quantities more frequently than single buys of large lots that might sit on a shelf for a long time.

Generally speaking, most of the chemicals seem to have better shelf lives if they are stored in cool dark places.

Be safe

Glenn,
If you don't want to work with dark or amber epoxy, don't buy large quantities of epoxy. Use new epoxy every 6 months and it will be less amber or dark, than if you have it for 5 years.

The same thing can be said for quite a few things where chemicals are involved. Buy smaller quantities more frequently than single buys of large lots that might sit on a shelf for a long time.

Generally speaking, most of the chemicals seem to have better shelf lives if they are stored in cool dark places.

Be safe

Hi Glen
according to flexcoat you can store 2 part finish indefinitely in the freezer take it out and thaw it and use it. worked for me after 6 mo I took mine out and warmed in water
B0b