The strapping lumber I brought back from the sawmill (yes, we have a few in New Mexico) measures a real 1" x 4". According to David Stimpson's build manual, you build the form for the bows while building the first bow. This is very green, wet stuff. After snapping 2-13' pieces, I was able to get the first piece bent into place. So far I have snapped 3 more trying to get the 2nd piece in place.
Could the 1" material be too thick? Would I be better off planing it down to 3/4" (which is what I would be working with if I had bought the stuff from the local lumberyard)?