Here is my swatch after one run through the washing machine, with a slightly longer then usual agitation cycle (I let it agitate, then stopped it and set it back to the beginning to agitate longer). It’s felted pretty well, but the stitch definition is still very clear — more clear in the photos then it is in person. The size has shrunk from 10×20 inches to 9×12 inches – slightly smaller then my lasagne pan. There are a couple of areas where I can feel small patches that haven’t felted as thoroughly as the rest of it – I think those may be the areas were the yarn twisted up more as I knit.
I pretty happy with how this has come out – I may throw it in for another run through the wash cycle, to see if I can get it to felt up more, and maybe lose the stitch definition completely. I may just have knit it too tightly to felt well – though what exactly I can do about that I’m not sure. At four sizes above the recommended needle for gauge, I was still knitting tightly according to my gauge measure!