I have a lovely piece of spalted maple for a lid on a walnut box. I tested oil and oil/varnish on it and it darkens too much to work like I want.
I then tried some water based poly I had left over from a cub scout project. It didn't darken at all, nor did it raise the grain like I expected. Seems pretty good.
I always think of water based as a dilettante's product, and have never used it (except on the cub scouts trivets), but it seems to work here. Is there any reason not to use wb poly on spalted maple? Thanks.