I have some really lovely wide cherry that I was originally thinking of using when this project was announced. In Episode 1, Paul points out some benefits of using two boards unglued edge-to-edge as a design feature. What gets lost in terms of controlling wood movement/distortion by using one wide board instead of two narrower boards? Any and all thoughts appreciated.
One wide board should work just fine. The purpose of the breadboard end is to allow expansion and contraction while keeping the assembly flat. The examples in the castle are quite a bit larger and were probable built from widths that were not suitable for larger furniture, i.e. off cuts from other boards. Hence the multi board configuration. Frugal use of stock.
No use of glue due to the inevitable failure of traditional animal glue when exposed to repeated moisture and heat. Boiling water is a time honored cleaning method.
So…I think its really a design choice in this case…two pieces or one. Your choice.