I'm working on a few test pieces with some cotton fabric. I don't have a place to spray, so I'm limited to brushed on finishes for now. So far I've glued down two different pieces with Titebond, laid down a couple light coats of white glue on top of the fabric, and am comparing clear coats. One I'm building up with polyurethane and the other with polycrylic. From what I read around here, some folks like the polycrylic for the way it builds, but don't tend to use it as a top coat. So far, what I like about the polycrylic is that it builds and fills in the fabric quickly, it dries quickly so it doesn't gather as much dust as polyurethane, and it seems to be less prone to small sanding scratches showing through. As far as durability of a top coat, am I correct in thinking standard polyurethane will hold up better? I'm wondering if I could use the polycrylic to build up a flat surface and then top coat with polyurethane. Would I need to let the polycrylic cure for a long time so I didn't trap any moisture under the top coat?