My first board bow is made from an oak flooring board , I saved a few good looking boards and while working on some osage staves I decided to take a break and picked up one of the boards , 4" handle , 1 1/2" fades , 2" widest point with even taper down to 3/8" tips , 3/8" thick limbs , 57" NTN , 35# at 24" ( I have a short draw length ).
It has one spot in a limb that was a little concerned about so I kept it a little light , I've been thinking about sinew backing it one of these days and bumping it up to a hunting weight bow ( 40# minimum ), but for now I use it to show folks that they don't need staves to build a bow .
I have a few others set back and plan on a takedown , they are shorter than the board I used .