I'm going to try hard and feel those ripples. I'd swear they aren't detectable by the touch. I even wonder if the ripple has something to do with varying thicknesses of poly rather than an uneven surface. If the butcher block surface itself isn't perfect then there would be different amounts of poly even with a perfect surface. Maybe it is more an optical effect? ... Anyway I'll look some more on Friday. I did do some additional sanding today on another section to see if I could get rid of the slight ripples. I used 400 grit and then just a few passes with 2000 and the ripples were still there.
I'm not sure I need the finish any better than what I've got but I'd like to see what is possible as long as I'm still experimenting. I'll give the 1000 grit a try on a paint stick and see what happens. Maybe I'll post a pic link for the heck of it if I can get a good shot.
thanks, dwhite