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Viewing Topic "Epoxide Oil Drying Questions"

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Posted By: George O'Hanlon
Total Posts: 2270
Joined Date: Jun 15, 2004

Epoxide Oil is like any drying oil, it polymerizes but quite slowly when it is not mixed with pigments or metal driers. We do not recommended unpigmented oils in paintings because they all yellow. Why are you applying this oil over watercolor?

We do not recommend applying Epoxide Oil on or mixed with Ceracolors. It does not "interact" with gum arabic and aquarelle pencils as it is an oil and not a polar substance that would interact with these materials.

George O'Hanlon Technical Director Natural Pigments
Posted : Dec 29, 2017
Posted By: John Lewis
Total Posts: 2
Joined Date: Dec 29, 2017

My wife asks, "How does EO act with Ceracolors?"  "How does it interact with gum arabic?"  "How does EO interact with aquarelle pencils (e.g. Derwent water-soluble)?"



Posted : Dec 29, 2017
Posted By: John Lewis
Total Posts: 2
Joined Date: Dec 29, 2017

My first experiment - putting EO over watercolour, on an acrylic gesso base. No sign of polymerisation.  Now I'm up here in Newfie, and there is bloody little light at this time of year, so I've moved it to a well-illuminated location to obtain whatever light there is.

If I were using unmodified linseed oil I'd have put in a siccative - maybe not lead white, but at least raw umber.  Does EO work the same way as unmodified linseed oil with siccative pigments?

 

Regards, John Lewis

Posted : Dec 29, 2017
Posted By: George O'Hanlon
Total Posts: 2270
Joined Date: Jun 15, 2004

Please describe how you are using it: What proportion of Epoxide Oil is to oil color? Are you applying thick layers? What is your environment, i.e. temperature, humidity or light?

Epoxide Oil is a fast drying bodied oil but it is not fast drying in the sense of an alkyd medium.

George O'Hanlon Technical Director Natural Pigments
Posted : Jun 20, 2017
Posted By: garyr
Total Posts: 1
Joined Date: Jun 20, 2017

For some reason the NP Epoxide Oil is not drying for me either mixed with oil paint or separate alone by itself. It's been seven plus days now and it's not showing any signs of hardening. What is the average drying time for EO? Does temperature, humidity or light need to be adjusted? Do I have to add another fast drying chemical or hardening catalyst to get a hardening reaction? What am I missing about fast drying EO? I really want it to work!

Posted : Jun 20, 2017

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