|Pie Wedge Construction
|00:55Pie Wedge Construction is another term for Block Construction. The rationale is as follows. If you cut a wooden hoop out of a flat board, the grain would be all in one direction and as the wood dried the hoop would become a definite oval.
Some banjos have been made with two or three or more such hoops glued one atop the other with the grain running in different directions for each layer. this helps counteract the ovaling effect. By cutting small blocks all with the grain running as much lengthwise as possible, you can make a wooden hoop with grain that runs nearly in a circle. When this dries it will be nearly as round as the day it was made.
The pie wedge concept comes from the idea that if you cut a 12" round piece from a board then cut it like a pizza, you could remove a nine inch circle from the middle and be left with the blocks mentioned above.
Also See: Block Construction
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LAST UPDATED 10-10-2014 05:17