Q: I wish to use Casein or Casein Silverpoint on wood panel for bole/gilding application and egg tempera painting of icons. Which is the better product for this application?
A: While most gilders prefer a traditional chalk ground made from chalk and rabbit skin glue, the Silverpoint Ground would be better suited as a substrate for bole, since it dries harder and is more absorbent.
Q: How is casein gesso better than casein paint (such as Shiva titanium white), when preparing a ground for silverpoint (on paper)? Thank you.
A: Shiva Casein Paint does not dry to permanent finish, whereas our Casein Gessoes do.
This ground also contains Zinc White, which allows for the tarnish marks that are left when a silverpoint comes in contact with the surface. Shiva Titanium White does not contain Zinc White.
Q: I have both of your casein gessoes for experimenting with grounds for watercolor on 300lb watercolor paper. Both seem pretty resistant to absorbing watercolor with much beading up. Am wondering how to make your dried and cured casein gesso more absorbent for watercolor.
A: You can make the gessoes even more absorbent, by thinning the gesso with 10-20% water before application.
Q: Should I prime birch wood panels before applying the ground?
A: There is no need to prime the panels, but they should be sealed with a layer of shellac or PVA, in order to prevent uneven moisture absorption on the rest of the panel.
I'd like to order Casein Absorbent Chalk Gesso and I just wanted to make sure if it's safe to ship this product in winter due to freeze/thaw conditions.
And the second question is whether you recommend to size the wood panel with Gac 200 or any other sizing medium.
A: All of our Casein products are not affected by freezing temperatures. We always recommend sealing any type of panel, before applying the ground.
Q: Can you provide composition and material safety data sheet?
A: Yes, we do have an SDS sheet for this product and we will forward a copy to you today.
Reading this gesso goes on any surface, just to avoid lots of errors, does it go on the Aluminium panels as well
I am always looking for lighter working surface because of arthritis
A: The gesso should stick to the aluminum, IF the surface has been degreased and has a slight amount of tooth to it.
Q: Is this gesso suitable for non-porous surfaces such as polyester or metal, will it be prone to cracking off?
A: In our experience the ground works on metal, but you may want to test your particular application, before using the gesso on a larger scale.
Q: Will casein absorbent chalk gessoa and silverpoint ground work well for encaustic on panel?
A: All of our Casein Gesso Grounds make an excellent surface for encaustic painting.
Q: Can you use the casein gesso in place of a traditional gesso for the base layer with bole and gilding over top for a frame?
A: While we always recommend a traditional chalk ground, made with rabbit skin glue, we have some customers who use this silverpoint ground as a substrate successfully.
Q: What is the drying time for the casein gesso?
A: Dries to the touch in about 10-15 minutes. Allow ground to cure 1-2 days before sanding.
Q: Any chance you could make this ground in black? Please??? I hate using acrylic gesso as a ground and I am limited to how much time I can spend drawing in metal point by my full time job. Although I would love to try creating my own archival black ground suitable for creating work to (try to) sell, I just don't have the time right now.
A: Our black gesso also responds to silver point abrasions.
Q: I have stretched linen canvas over panel and plan on using the casein silverpoint gesso on this surface for silverpoint technique. Do you recommend applying PVA size or similar before building up the gesso?
A: We always recommend sizing with rabbit skin glue or PVA as a good practice.
Q: Does your casein gesso need time to cure?
A: Yes, we recommend letting the ground cure a day or two before painting on it, or if you want to sand the surface.
Q: The SP Ground has an incredible surface for Carbon pencils. I have had tarnishing reactions with silver, where an area around the mark has tarnished and discolored, that have not happened when drawing with aluminum wire. The paper the ground was brushed on was Plike by Neenah, I have not tried on Arches hot press or the like. Are there any known reactions with Carbon Black pencils?
A: Pretty much anything that comes in contact with the ground will leave some sort of mark. The silverpoint, however, leaves a mark that continues to tarnish with time. A carbon black pencil will mark, but not tarnish later.
Q: Hi can I tint chalk ground casein gesso for silverpoint?
If with what? Pigment powder?
A: Yes, you can add colorant to the gesso. Either Pigment that has been dispersed in water, or you can add watercolor. We do not recommend adding acrylic colors.
Q: 2 questions.
1. For silverpoint drawing, how long should the chalk gesso cure before it's hard enough to draw on.
2. I purchased the silverpoint chalk gesso from you about 5 years ago. I finally opened it today and stirred it. The gesso had separated from the liquid and I can't break up the lumps. Do you have any suggestions for me to make the ground smooth?
Thanks for your help.
A: 1. You should be able to draw on the ground within 24 hours of application.
2. After 5 years the product is considered expired.