Klopsteag notes elsewhere in the text that since the limb tips are parallel for a ways, some of that length needs to taper in thickness, unlike the main part of the limbs. He also points out that the tips should never be narrower than their thickness.
"Pyramid" bows are addictive. Once a person sees how they are nearly tillered as soon as they are sawn out, it begins to seem like that's the only sensible way to make a bow. I have made nothing but pyramid bows for the last 15 years. I have no interest in any other design.
Jim Davis