pigmenting epoxy

[TimW]

off the shelf epoxy adhesive seems to be opaque and yellowish generally.
Is there a way to darken it? Or is there a clear one I could buy in
small quantities?

[Andy Burns]

Post by TimW
off the shelf epoxy adhesive seems to be opaque and yellowish generally.
Is there a way to darken it? Or is there a clear one I could buy in
small quantities?

Yes, you can get specific pigments for it, but (within reason) almost
anything can be used ... this chap does lots of experimentation

<https://www.youtube.com/@peterbrownwastaken/search?query=dye>

[Theo]

Post by TimW
off the shelf epoxy adhesive seems to be opaque and yellowish generally.
Is there a way to darken it? Or is there a clear one I could buy in
small quantities?

There are 'clear' epoxy adhesives but I think they still have a slightly
yellowish tint, especially as they age. The kind of epoxy used for resin
pouring does seem to have a clearer look to it - not sure if that's a
different chemistry (maybe thinner so less air bubbles?).

For darkening it, surely you can add any pigment you feel like? Artists
pigments are available in many colours, or just something simple like carbon
black.

Theo

[N_Cook]

Post by TimW
off the shelf epoxy adhesive seems to be opaque and yellowish generally.
Is there a way to darken it? Or is there a clear one I could buy in
small quantities?

I used to make convincing copies of unobtanium brown/black bakelite
knobs for old radios by taking a mould of an original and casting epoxy
with ground up asbestos-free bakelite scrap mixed in the resin part