Where is the egg yolk? You need the yolk to make the emulsion once that linseed oil is added, which by the way is mixed little by little, never the whole thing at a time. Add a yolk and your priming will be much better. Read Velazquez´s master Francisco Pachecho´s treatise on painting...
Sorry, but there is so much unnecessary guess work. There are exact proportions for glue and water. The glue is added to cold water and allowed to swell for a few hours or overnight. Then it is warmed over a double boiler. Check The books from Max Doerner or Kurt Wehlte. Order from Kremer Pigments, NYC.
I've heard a lot of different opinions about RSG being used on canvas (as opposed to board). Some say it's better to use PVA and acrylic gesso on linen/cotton canvas instead of RSG, others say RSG for linen. What is the best way? :-\
There are clearly different methods and this man has found a way (the two fingers test) to ensure you have the right proportions. Granted, not everyone can work without a recipe, but for my money, his description and demonstration were great.
yes, there is a model proportion. the glue should be ca. 7-8 to 10% maximum. gesso based on stronger glue cracks when you press it, and also cracks with time faster than gesso based on lighter glue. if you add egg yolk to the gesso of room temperature it will allow you to add more linseed oil which makes better gesso. proportion oil to chalk should be 1:1 ("oil gesso" for canvas). you should also prime the canvas with two coats of plain 8-10% glue before gesso aplication - it's necessary because linseed oil causes the degradation of the unseald linen with time. good idea is to check the process in Doerner :]
I'm trying to make a crackle effect - so can I use a larger proportion of RSG and not add the titanium white and linseed oil? I'm hoping to put a layer of RSG on board and then paint a layer of paint over that.
No, this is not how to use rabbit skin glue on linen. The main point of the RSG, or sizing, is to protect the fabric from linseed oil in oil paints, so you should not be adding oil to the RSG. Linseed oil will rot linen very quickly. Where the heck did you get this idea from? Just curious.
you seem to write with decisive authority but without sources. my sources: Cennino Cennini (Il Libro dell'Arte - written in Tuscan dialect) but more recently Gino Piva (Manuale Pratico di Tecnica Pittoriche, Hoepli 1971) p 227. The same recipe is illustrated in this video ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Zgz5OEEawq4.htmlsi=7IpFGUhxVF63rHau&t=747 at 12.27. I wouldn't use such a haughty tone when trying to understand something as complex as painting. Just saying
@@AnthonyLombardi Well, maybe your sources are naive, like yourself, or you misinterpret them which I suspect. It is very well established fact that linseed oil rots linen. Lots of sources out there if you bother to look. Thats why artist put a 'sizing' on cloth, which can be RSG or PVA or a gesso first. None of these contain linseed oil. They provide a barrier to shield the fibers from linseed oil or other oils. It has been done this way for centuries for this reason.
@@AnthonyLombardi and....for my sources, I will just direct you to Chapter 6 of the well respected book by Ralph Mayer titled "The Artist's Handbook of materials and techniques", chapter on "Grounds for Oil and Tempura painting". It goes into great detail on the subject of glue size and why. I could also direct you to many other sources, but doubt is necessary.
@@AnthonyLombardi and finally, it occurred to me you are trying to make some kind of old style gesso. Let me clarify, my suggesting using gesso as a size layer was referring to modern gesso which is made of acrylic. Old style gesso has all kinds of recipes out there, nothing like modern gesso, but should not be applied directly on linen. You first put down a sizing first, which another viewer commented on.
No, with all due respect to the person who posted but he is doing everything wrong. You are supposed to let the rabbit skin glue soak for at least an hour in water and then heat in a double heater. The titanium (sometimes lead) and linseed oil are actually supposed to be part of an oil primer (oil ground) that is applied to the canvas after the rabbit skin glue has dried. I suggest you look elsewhere for proper instructions.
