Tuesday, August 18, 2009

It's been a while since my last post. I haven't been painting, I've been preparing materials. A new batch of canvases are in the works, I described that process in an earlier post. I'm also preparing gessoed panels. Most of the commercial panels are prepared with acrylic gesso which I find to be too slippery and insensitive to my artistic touch. There are now some better products starting to appear on the market but I prefer to make my own. It is a lean ground made with chalk and glue water. First I decide on the support to be gessoed. Wood panels, masonite or paper all work well. I do not recommend this gesso for stretched canvas because it is not very flexible and could crack under stress. For this project I am using masonite and had two 4' x 8' sheets cut to size giving me 36 panels to prepare. All you need to make the gesso is a hot plate, a pot, a wooden spoon, rabbit skin glue, water and chalk. I use commercial whiting but gypsum or any other chalk should be fine, feel free to experiment, you may find that you are an inventor as well as an artist. Add 1 oz of rabbit skin glue to 20 oz of water and gently heat them together until the glue is dissolved. Stirring the water while heating will keep the glue from settling to the bottom of the pot. Then slowly add 20 oz of chalk. Like the glue it will settle to the bottom in a clump so continue stirring. When the chalk and glue water have completely combined the gesso is ready. Using a large brush apply the gesso to the panels (I like to keep the gesso warm and stir it ocassionally) and set them aside to dry. Allow them to dry overnight then lighly sand the surface and apply a second coat. Repeat the process adding a third and fourth coat. Finally make a pot of fresh glue water, also 20:1, and apply this with a bit of dry color as the finishing coat.....

No comments: