[Tom Edgerton]

I've used the Fredrix Ultrasmooth also with fine results, but I agree with Marvin that I wouldn't use it for commissioned work. Great to practice on. Also has the advantage of being less subject to variance in tightness with changes in humidity, due to the poly content I guess. Might be easier thus for students to learn stretching with. Here in the humid South, our canvases go from banjo tight to fairly slack, depending on the season, which can be frustrating.

The poly content balances the shorter cotton fiber length, compared to linen, so has good strength for a cotton canvas.