Cut List for British National Hive Crown Board and Roof

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The following two tables present the cut lists for the crown board and the roof of a British National hive (BNH). In the following tables, each Material column lists nominal dimensions, and each Dimensions column lists the actual, final measurements.

Crown Board for the British National Hive
Quantity Material Dimensions Notes
4 1" x 6" clear pine 18" x 3/4" x 3/4" These are the long side rails.
Dado 1/4" wide by 3/8" deep along entire length, 1/8" from edge.
2 1" x 6" clear pine 17-1/4" x 3/4" x 3/4" These are the short side rails.
Dado 1/4" wide by 3/8" deep along entire length, 1/8" from edge.
Rabbet opposite ends, 3/4" wide by 3/8" deep.
1 1/4" lauan plywood 17-1/4" x 17-1/4" x 1/4" This is the top.
Cut two 4-1/2" x 1-5/8" ovals in the top. Center the ovals left to right. Position one 6" from the front edge of the plywood board and the other 2-5/8" from the front edge of the plywood board. These holes serve for ventilation and can also be used to accommodate a Porter bee escape at honey harvest time.
[Credit: Illustration by Felix Freudzon, Freudzon Design]
Credit: Illustration by Felix Freudzon, Freudzon Design
[Credit: Illustration by Felix Freudzon, Freudzon Design]
Credit: Illustration by Felix Freudzon, Freudzon Design
Roof for the British National Hive
Quantity Material Dimensions Notes
4 1" x 6" clear pine 18" x 1-1/4" x 3/4" Two of these are the long sides of the inner ridge rail, and the other two are the short sides of the inner ridge rail.
2 1" x 10" cedar 20-1/4" x 5-3/4" x 3/4" These are the long side panels.
Rabbet the edge of each corner 3/8" deep by 3/4" wide (see the following figure).
2 1" x 10" cedar 19-1/4" x 5-3/4" x 3/4" These are the short side panels.
1 3/4" exterior plywood 20-1/4" x 20-1/4" x 3/4" This is the top.
1 24" aluminum flashing 24" x 24" This is the protective metal cover.
Use tin snips to cut the flashing to size. Wrap flashing over the top of the assembled roof. There will be a flap that folds over the top edge. Fold the corners to avoid sharp edges.
[Credit: Illustration by Felix Freudzon, Freudzon Design]
Credit: Illustration by Felix Freudzon, Freudzon Design

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