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-   -   Method for colouring and texturing epoxy resin (https://www.vintage-radio.net/forum/showthread.php?t=181001)

unitelex 10th Jun 2021 8:56 pm

Method for colouring and texturing epoxy resin
 
I found by experiment that I could tint normally clear epoxy resin very easily using laser toner powder (laser printer).

I needed to achieve a dark anthracite colour to fill in a chipped surface.
I am aware that black epoxy is available but did not have any nor did I want to purchase a tube especially for this very small job.

I used black toner powder, added while mixing the clear adhesive and hardener together. While setting I noticed that the result was going to end up too glossy compared to the base material so while it was still tacky I dusted the surface with more toner giving a matt look. The results were surprisingly good.

I have not tried with magenta, blue or yellow toner or any blending of these.

Best Regards
Chris

emeritus 11th Jun 2021 11:08 am

Re: Method for colouring and texturing epoxy resin
 
When I was a student, in the lab at STC where I did work experience, every bench had a small tool box which included a pack of Araldite and a small jar of Titanium Oxide powder that they used to mix with the Araldite where a white finish was required. I have coloured Araldite brown to fix some earthenware plant pots by grinding a piece of broken pot in my wife's kitchen pestle and mortar to a very fine powder.

greenstar 14th Jun 2021 4:34 pm

Re: Method for colouring and texturing epoxy resin
 
I wonder how to achieve a brown bakelite colour and whether filing/grinding bakelite to mix with it would achieve that? I guess this has been done effectively.

chriswood1900 19th Jun 2021 12:07 pm

Re: Method for colouring and texturing epoxy resin
 
Quote:

Originally Posted by greenstar (Post 1382648)
I wonder how to achieve a brown bakelite colour and whether filing/grinding bakelite to mix with it would achieve that? I guess this has been done effectively.

I think you might need to be careful where you get the old Bakelite from, as some used asbestos fibres as the filler and if ground up they may present a health hazard.

vintage_8bit 28th Aug 2021 8:59 pm

Re: Method for colouring and texturing epoxy resin
 
Today I was repairing a garden water feature clay pot. I used Araldite rapid. I coloured it with a couple of drops of Bolgers spirit based wood dye. It mixed easily and the mixture cured as normal. I was quite pleased with the result, more for thoughts on future use. Colin

Bazz4CQJ 28th Aug 2021 9:47 pm

Re: Method for colouring and texturing epoxy resin
 
Quote:

Originally Posted by vintage_8bit (Post 1402129)
Today I was repairing a garden water feature clay pot. I used Araldite rapid. I coloured it with a couple of drops of Bolgers spirit based wood dye. It mixed easily and the mixture cured as normal. I was quite pleased with the result, more for thoughts on future use. Colin

It might be the case that a solvent colourant additive could have a more uncertain effect on the adhesive strength than a finely powdered solid. I bet that somewhere in the Arts and Craft world there is just the right stuff.

B

Refugee 29th Aug 2021 1:01 am

Re: Method for colouring and texturing epoxy resin
 
Where I live you can dig up clay that is a good match for plant pot repairs once dries and mixed with epoxy.

Ernest1 26th Sep 2021 6:04 pm

Re: Method for colouring and texturing epoxy resin
 
I found cheap watercolour paints crushed up work well and the range of colours are easier to get close.

kellys_eye 26th Sep 2021 8:48 pm

Re: Method for colouring and texturing epoxy resin
 
I've seen methods of colouring PVC using wax dyes which would seem to suggest they would mix well with epoxy. Since these dyes are all available in a full pantone range (many suppliers will make a mix to your requirement) the options seem endless.

Getting hold of a CMYKW selection (cyan, magenta, yellow, black and white) should allow anyone to mix 'any colour' on spec.

You can also get 'glitter' in gold/silver - almost powder-like - to make a metallic finish.


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