The bellows have brass internal hinges, a large (1.5" diameter) inlet valve in the conventional position, and an elbow pad. The clappers are eleven inches long and six inches wide, and eleven inches apart at the back when maximally open. Some features of the design are unconventional. First, it isn't symmetrical about the midline. The clappers are somewhat kidney-shaped. I liked this shape when I made cardboard mockups. Second, it has a saddle; not like the narrow saddle of a musette bellows (or Jon Swayne bellows, or Klondike Waldo's bellows), but a wide saddle that is rotated so the bellows is not horizontal when worn. The nose end of the bellows points up a bit. Bellows mockups with this orientation were more comfortable to me. The inner clapper, saddle and all, was shaped from a single block of walnut. Third, the bellows has a brass wire "rib" that acts like a middle clapper. It keeps the gusset from ballooning out or collapsing inward.
The torso strap passes through a tunnel in the inner clapper. I covered up the heads of the hinge bolts on the outer clapper with a wood inlay, and the arm strap has a button hole at one end and slips over a brass knob. The tube to the bag fits inside the outlet port on the bellows. It might not be very visible in the photos, but I did a terrible job on the finish, and the wood is marred in several places. Anyone with any actual woodworking skills would cringe if they saw it up close.
Any input is welcome.
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