1. Thanks for answering the question that was in my mind.

        I knew that the buttons shouldn’t be pushed up hard against the tail, as this would only allow for contraction and not expansion, but I did not know how much of a gap.



        1. Looks like he built this in August. I’m assuming the weather is similar in that August is warmer and more humid than winter.

          If that’s the case you are only worried about contraction in the drier winter months. Also the wood will,continue to dry over time.

          That said, I’d still leave a 16th or so just as a hedge for further expansion over the rest of the summer.

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