Using Pigment Markers on Acrylic GessoApproveRejectUn-ApproveSubscribeUn-Unsubscribe
Question asked 2020-03-11 10:04:42 ...
Most recent comment 2020-03-11 16:43:00
Art Conservation Topics
Grounds / Priming
Solvents and Thinners
I would like to explore using W&N Pigment Markers which seem to use a good selection of commonly used ATSM I/II pigments but are available in a marker form. I already have a few of their water colour markers which I like, but there are many more colour choices in their Pigment Marker range.
However they are ethanol based and I understand that alcohol/ethanol would act as a solvent on acrylic gesso? I know they can be used on Yupo and other alcohol resistant plastics, but I am looking to add clear Gesso which contains silicia make a more toothy suface. A non-absorbant, more pastel ground like surface.
Considering that with the markers I would be making rubbing motions I'm not sure what I could put over the Gesso to protect it from the alcohol. Are there any varnishes that are not soluable in alcohol but will resist a rubbing motion?
The only thing I could think of was a layer of water based polyurethane (but I am concerned about yellowing).
Any ideas or suggestions?
Answers and Comments
I would first just try this out on a sample canvas covered
with acrylic dispersion ground to see if this is really a problem. It is possible that you would be happy with the results. If it is a problem, regalrez
varnish (sold by in a few proprietary names by paint manufactures, just Google
it) is not readily soluble in ethanol and would be a likely choice. First try
this to make sure but it should work fine in theory. Water-based polyurethane
varnishes do yellow quite appreciably, I would not use them for this purpose.
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