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Old 01-19-2018, 11:15 AM
Ribera Ribera is offline
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your 2˘ on sun-thickened. . .

I've come to utilize stand oil in my medium, and appreciate it
provides fine oil and yellows less. One of my former teachers,
though, who had his students utilize stand oil, recently wrote
stand can take a ridiculously long time to dry, in fact, collec-
ting dust for months.
He mentioned when he younger he'd experimented with sun-
thickened linseed oil - which dries more quickly 'n stand
(one of his gripes - He remains a stand-man).
So I believe I'll likely at least give sun-thickened a go.
I utilize the W.C. forum, though, to see whether I couldn't re-
ceive your on it's merits, not to mention any recommen-
dations on decent brands to procure.
r
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Old 01-19-2018, 03:55 PM
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Marc Kingsland Marc Kingsland is offline
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Re: your 2˘ on sun-thickened. . .

Freshly purchased stand oil does dry much slower. However I have noticed that if you leave it in a half filled bottle which you open occasionally everyday, the drying speed starts to increase. Probably because it's very slowly starting to dry in the bottle. Eventually it dries faster than standard linseed while still yellowing less. Something I can't say for my own past samples of sun-thickened, that while bleaching in the sun in production, still yellowed more than stand when they dried.

As a result I haven't bothered with sun-thickened for years and don't expect I will ever do so.
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Old 02-09-2018, 04:39 AM
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Gigalot Gigalot is offline
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Re: your 2˘ on sun-thickened. . .

Sun-Bleached oil is best grinding oil for me. At least, for layered technique.
To improve Stand oil drying quality, just add 30% Galkyd to it. A mixture of 70% Stand oil + 30% Galkyd will eventually dry!
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Old 02-09-2018, 08:26 AM
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Humbaba Humbaba is online now
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Re: your 2˘ on sun-thickened. . .

I have seen a couple of videos of Richard Schmid, where he talks about his medium to achieve transparent shadows, and for general use when working Alla Prima, the recipe contains Stand oil:

1 Part Stand Oil
1 Part Dammar
5 Parts turpentine

I use stand oil extensively in a home made medium, and the drying time is 2-3 days when working fine layers, but maybe has something to do with the region where I live (Caribbean Sea).

This medium is prepared with 10% Amber varnish, 90% stand oil using high temperature for fusing the ingredients.. A slightly modified version is 1 part stand oil, 1 part linseed oil, 10% Amber varnish.

I can use it for general purpose, or for making paint transparent.
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Old 02-15-2018, 05:15 PM
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WFMartin WFMartin is online now
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Re: your 2˘ on sun-thickened. . .

Sun-Thickened Linseed Oil is often claimed to be one of the most likely to yellow upon aging of all the forms of Linseed Oil.

That is the reason I have eliminated Sun-Thickened Linseed Oil from my medium. I used to employ several different recipes for painting medium, and a couple of them included the use of Sun-Thickened Linseed Oil. Once I learned of the possibility of it having such a penchant to yellow, I quickly stopped using it.

There are so many ways to create wonderful, user-friendly, and archival mediums with other forms of Linseed Oil, that I chose not to even risk the possibility that it may yellow over time, by eliminating it from my ingredients.
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