A: For some time I have been making pastel paintings in two sizes: 20″ x 26″ and 38″ x 58″. Sizes are dictated by practical considerations.
The smaller ones are because 22″ x 28″ sheets of acid-free sandpaper are what’s available. (I mask off an inch all around for mats so the paintings are 20″ x 26″). For large paintings I buy rolls of acid-free sandpaper that measure 54 inches wide by 30 feet. I cut this down to 40″ x 60″ for paintings (and mask off an inch all around on these, too).
And why specifically make them 38″ x 58″? This is the largest size I can make.
Again, practical factors come into play: the size of my truck, the cost and size of mat board, and the weight of the frames.
My pastel paintings need to lie flat when they are moved. Framed paintings are 50″ x 70,” the largest size that can fit flat in the back of my Ford F-150. 38″ x 58″ is the largest size that will fit in a 4 feet by 8 feet sheet of mat board. (60 inch wide mat board is available, but the cost goes up considerably). Lastly, I’ve never weighed them but my large framed paintings are heavy. It takes two people to carry them.
Comments are welcome!