Hi friends,
I need some help again, I was just mixing up some glazing medium equal parts turpentine, linseed oil, dammar varnish, and I was working in that order and measuring using a jar cap (I know, I know). However when I went to measure the dammar varnish, I carelessly poured the contents back into the original varnish container instead of the container used for the medium. So my question is: will the remnants of the linseed oil in the jar cap have a negative effect on the rest of the varnish inside the container?
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May I ask, where did you get that recipe? What did you hope to accomplish with the dammar varnish? Is this glazing recipe to be used on top of DMP medium made with clove oil?
I don’t have an answer to your direct question (although I suspect the answer is ”no”). However, there is a lot of evidence that using dammar varnish, a natural resin, can cause problems later on. Check out MITRA forum and resources section. Its free and in English language. MITRA (udel.edu)
I have always glazed just with the paint out of the tube, or with a little linseed oil or a little Liquin, a modified oil resin. I suggest that you glaze using your original medium, just spread the glaze out thinner using your brush. I think I recall Mr. Carder demonstrating this on one of his videos. Using turpentine to thin paint can cause problems because it is so easy to overdo it, and turpentine is not good for you to breathe in. I am old and am happy to share my mistakes with others. For free
Somewhere on the main site is the recipe for DMP medium. I made over a pint 7 or 8 years ago. Split the batch in half and added the clove oil to one. I'm almost out of the non- clove medium. I have a little of the clove. I only use it when I mix and tube paints a couple of times a year. The non clove oil I mean. Even then just enough to lighten the consistency when needed.
The pull between modern materials and traditional materials seems to be a constant on the forum. When it comes to medium I'll go with the simple DMP recipe.
Mark Carder's Slow Drying Medium recipe is as follows: