How I prepare my canvases for pastel:
For a few years now, I’ve been painting pastels on canvas which I’ve prepared with a water base primer to help smooth out the canvas texture so it won’t eat up my pastels as quickly as the rough canvas would without any added primer. Several years ago I researched glassless pastels (how to paint pastels without needing to frame under glass) and this is the technique I’ve come up with, after a lot of experimentation, of how to prepare my chosen surface – pre-stretched canvas.
This is what the canvas looks like before I’ve brushed on any primer – lots of texture!
Here are some canvases with a couple of coats of primer. I usually put 3 coats of primer on the top and sides of each canvas, waiting for them to dry before painting on the next layer.
The primer is quite thick and occasionally has bits of dried primer or other debris which I can’t stand having to pick out while I paint, so I use paint strainers to remove any garbage in the primer, and will thin it to about the consistency of thick cream with water before I strain into a yogurt container. I can then seal that container and it will keep indefinitely.
I then just use a nice house painting brush, or if I’m doing smaller canvases a smaller fine bristle brush to paint on the primer as smoothly as I can, trying not to leave any brush strokes.
After the primer has dried completely – usually overnight, or several days if I get distracted… I then wet sand them all to eliminate any brush strokes, rough spots and to make them even more smooth.
I’m fortunate that I’m able to use my husband’s sign shop for these task. He’s not quite as lucky, since this can take more time than we both expect!
Above, you can see a canvas that’s been wet sanded (in front), then the one that hasn’t.
Here’s a canvas that’s still wet after being sanded. They dry pretty quickly – especially on a hot summer afternoon!
As you can see, before I even begin to paint, there’s a lot of work that I need to do to make my canvases workable with my particular pastel painting method. By doing this prep work though, I’m able to eliminate any need for glass and archival cotton rag mat boards (the traditional way to display pastel artwork), and I don’t even need to use frames if I’ve chosen deep gallery wrapped canvases.