Wow, "Pinewood Derby", that brings back memories!
My dad was a simple man and a craftsman of much skill. The built at least 2 kitchens of mahogany cabinets using a Skil 77, his daily framing saw.
During my short cub scout career the major event was the Pinewood Derby, & dad was more excited that I was. I (he) built the car from the little kit in the 5' wide by 12'-ish deep shop he had, basically a long built in bench and a hallway tucked into the back of the house. He shaped that car beautifully to be aerodynamic, hollowed out a cavity and melted lead into it to bring it up to the exact weight limit, and used locksmiths silicon powder on the nail axles to limit friction. It lost in the first race to some lumpy, ugly contraption some kid hacked out by himself.
Thanks for bringing that up, I haven't thought of it in years.
As far as replicating parts with jigs, don't fret, I have the same issue getting them to match. Dad, on the other hand, could have turned them out by the thousand. [big grin]
RMW