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Question asked 2017-11-18 16:16:32 ...
Most recent comment 2017-11-25 08:49:15
I usse oil glazes over a monochromatic egg tempera underpainting.tand Oil (1part Sstand Oil and 6 parts english turpentine) is not satisfactory. Normally my woerk requires 3- to 40 very, very thin oil glazes. Can you recommend a workable reciepe? Alklyd and other such "synthetic materials" are not satisfactory for me.
Answers and Comments
I know from a forwarded correspondence that your primary issue is the slow
drying rate of your oil glazes. I applaud you for refraining from adding large
amounts of soft resins to your mixture to speed up the setting of the glazes.
This is a common, but lamentable, practice (see our "Resources" section for more
info on this subject). I do wonder how much medium you are adding to your paint
to create glazes. It is good painting practice to only add enough medium to
make a paint that can by physically manipulated to a thin glaze and not to
dilute the paint with so much medium that you create a “watercolor-like” wash.
I will assume that you are adding a reasonable amount of your stand
My first response to a query like this would be to suggest an alkyd medium.
You have made clear that you are not interested in that. I also know from your
previous email that you do not trust this medium. I am not going to try to persuade
you here but feel the need to comment on this for the benefit of others that
will read this thread. Oil modified alkyd resins have been in use since the
1920s and have stood the test of time. They remain more flexible over
time than oil paints and paints that incorporate them are less soluble to the
action of organic solvents than a paint that contains only a drying oil in the
same proportions. This is a separate issue than if one does not like the feel
or rheology of paints containing alkyd medium. Honestly, I never liked the feel
of oil paint with an added gelled medium. I have less of a tactile objection to
fluid alkyd mediums.
Anyway, alkyds are out for you. I wonder if you could substitute a faster
drying bodied oil (homemade sun thickened oil comes to mind) for the very slow
drying stand oil.
If you really do like the stand oil/turp mixture and only object to the dry
time, I wonder if it would not be a good idea to just add to your medium a few
drops of cobalt drier, or even better a system drier (a mixture of metal salts
known to accelerate the oxidation of oil films).
I generally do not recommend that
artists add driers to their paints and mediums because it is way too easy to add
more than necessary and risk compromising your paint film over time. If you
performed systematic tests and only added just the amount necessary to make a
glaze layer that dried in a reasonable amount of time (a couple of days) this
should be safe. If it were me, I would make up a batch (eg 8 oz) of your dilute
stand oil medium and add a few drops of drier. Then add this to a blob of paint
and create a typical glaze. Test how many days this takes to dry. If it is still
too long, add another couple of drops and try again until you figure out the
proportions necessary to create a glaze that meets your requirements. Do not
add more than necessary.
I hope that this was of some help. Feel free to post a response if I somehow
missed the point of your question. Additionally, others may have suggestions
that I did not think of.
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