New answers tagged carpentry
Normally a wooden springboard is a laminate of some kind to provide the necessary springyness. It would probably be far easier to buy a board than to make one. If you do want to make one I suggest a design like this (from Popular Mechanics, 1923): In this design the top plank has a 3-foot overhang, and the middle plank has a 4-foot overhang. Note that ...
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