I must give credit where it's due...my Dad was a custom homebuilder/architect/cabinetmaker before he got his doctrate in educational administration and eventually started the software company where I now work.
While I've picked up how to assemble and finish furniture and cabinetry, I still have a lot of trouble at the design stage. I'm not too good at being able to visualize how the pieces fit together and cut them all out to the exact size before assembly. That's where Dad comes in especially handy...he can do it all in his head. He thought for about 2 minutes before he started spitting out that I needed 20 bd. ft. of birch, one sheet of 3/4 in. ply, one sheet of 1/4 in. ply, etc.... and he was spot on. Amazing. (to my simple brain anyway). So I've gotta give credit to Dad for helping design and fabricate.
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~ John