Jack, let me pass on some advice that was given to me about maple butcher blocks.
When I first got mine my wife asked that I stain it to match the color of the cabinet it was going to be sitting on. I called the company I bought it from, told them what I wanted to do and asked if they put any kind coating on the wood that needed to be removed before I could stain it.
The tech support rep I spoke with said there was no problem staining the wood, but there was another issue I would need to deal with. When I butch block cutting board is used in a kitchen you are supposed to oil it about once a month. I always thought this was to keep it clean, but there is another reason I was not aware of. Over time the maple pieces will start to dry out and shrink, to the point where they start to separate. Therefore I was advised that if I was going to use the butcher block as a turntable base I needed to do one of two things, either A) remove the turntable once a month and apply a layer of oil to the butcher block, or B) put a layer of polyurethane over the stain to steal in the moisture and prevent to wood from drying and shrinking. I chose the poly. It has been two years since I sealed it and there are no gaps in the wood whatsoever. The on in the kitchen on the other hand is starting to show some minor separation because I am not a punctual as I should be in oiling that one (You cannot use poly on a cutting board tat is being used for food preparation.)