I recently did a quick test, coating Lexjet Sunset Select Matte and Epson Exhibition Satin canvas with Clearjet FA, solvent coating, from an aerosol can. I have read from other posts that Clearjet FA causes cracks when stretched, and I was expecting cracking similar to canvas that I have coated with Deft, a solvent wood coating, which I've used to "quick preview" canvas prints. I coated 1 square foot of EExhibition satin canvas and used 50 grams of Clearjet in 3 coats. Probably 35 to 40 grams made it onto the printed part of the canvas itself. I dried the canvas for 6 hours and stretched it, leaving 3 corners which I folded 5 hours later.
I chose a photo with dark corners to make cracking easy to see, but I can find only one spot that might be cracking and that looks like a flake and that crack/flake can only be seen with a magnifying glass. I've seen comments saying that Clearjet FA and probably all solvent coatings, will cause cracking when stretched. Does this mean that my canvas will crack later? Does it mean my "stretch job" is really loose and I need to be tighten it up? I have had similar results with Lexjet Sunset Select matte. Too good to be true?