Coloring Epoxy

user-210490 | Posted in General Discussion on August 31, 2024 05:10pm

I am gluing aluminum bar together(1/2 ” square) at various angles end to end. I am thinking of coloring the epoxy to allow the joint to show as a thin line. What would you use to get a black color and how much to use so it doesn’t effect getting the epoxy to dry thoroughly?

Replies

gulfstar | Aug 31, 2024 10:12pm | #1
Carbon black, don’t need much.
ysu65 | Aug 31, 2024 10:19pm | #2
That is what I use. Graphite lock lube.
stantheman | Sep 01, 2024 08:25am | #3
You can get black epoxy at my hardware store. I've only seen the quick set kind.

Universal colorants in tubes available at hobby stores.
Bentusi | Sep 04, 2024 09:45am | #4
I'm pretty sure you can color it with anything you want, and you would have to go way overboard to cause any kind of issue with the cure...If you even could at all.
There are purpose-made powder pigments and gel dyes everywhere that are cheap.
But I'm sure food coloring or basically anything colored that you can find and would mix well will work.
If I was only doing it one time and never again, I'd probably just go get some charcoal from the grill and crush it up.
grbmds | Sep 06, 2024 06:24pm | #5
When I was using System Three epoxy, they advised that powdered coloring or dyes are the best. However, they sell powdered colorants. I experimented, though, and did find that powdered or granules works well. I don't know what you'd use for aluminum though.