Taking those pieces back to my shop I cut a slot down the center of each tenon on the handle and knob to receive the blade and drilled a hole at 90 degrees to the cut through the tenon. I cut the blade to length and drilled hole at each end. I slipped the blade into the slot and pushed a 4d finish nail through the hole. Then I tied a leather boot lace around the horns of the arms and used the little flapper to wind the lace and tension the blade.
"Happiness is not something ready made. It comes from your own actions." ~Dalai Lama