While on vacation recently, visiting my folks, mom and I made some painting time together. I had heard that you could use very fine grit sandpaper for pastels. So, after visiting the local art supply in search of
real sanded pastel paper and coming up empty, Dad and I went next door to Home Depot and let Mom look around some more in Michaels. A few minutes later and with little money invested, I carried my bag of 220 & 320 grit sandpaper and a long piece of pipe insulation into Michaels and retrieved Mom.
At home, she dug out her art supplies. Fortunately she had some mdf boards cut just larger than our sandpaper. I taped the sandpaper (gritty side out) with masking tape to the boards while mom got us jars of water for the watercolor foundation. I was really curious if the paper would buckle with the water. Amazingly it did not! The watercolors took beautifully to the surface. After they dried, we used hard pastels to start layering our paintings and finished with just touches of soft pastels. Periodically I took my painting in and tapped it off over the kitchen sink so as to eliminate excess pastel dust.
For my paintings, I chose to zoom in on some lily pads photos I had taken from our visit to the local botanical garden. In the first painting, I used a full sheet of 220 grit sandpaper. For the second one, I cut a 320 grit sheet in half. The 220 was definitely better. I found the 320 too smooth for both the watercolors and the pastels. At first I thought I might want to gesso the sandpaper first since it's somewhat see-through, but given our time constraints, I decided not to. Plus I rather liked the warm tone of the paper. It worked out fine. I think these could just be mounted to foam core to be framed if desired. I almost forgot to mention - the pipe insulation? Cut it up and you'll have an endless supply of pastel blending instruments - a must have when working with sanded surfaces!
This is the watercolor and
pastel painting using
220 grit sandpaper.
For this piece I used
320 grit sandpaper.