Resawing with a frame saw

Making and using a frame saw has been something I have been curious about for a while. This board gave me a good excuse to give it a go. I thought the saw cut reasonable well on the wide board were it not for the binding. It has been a few days since I cut the board now and one half has a little less cup and the other has more. Chances are good that there was a lot of case hardening in that board and it isn't just the humidity. Cheers!