I started with the intention of having a professional cabinetmaker pre-cut all the pieces for me, but for various reasons I won't go into I decided instead to have a nearby lumber yard make the rough cuts for me. I did the rest myself with simple handtools -- in a third-floor apartment of all places. Thus the odd dimensions.

Right now they are clamped together. Fiberglass installed but no bracing yet. Still, they sound wonderful!