I've marked the locations of the components making up the horse on the baseboard so I can see where they sit even when they're not in place:
The first pencil line you see obviously locates the front edges of the wrestplank support blocks, while the line behind it shows the position of the nut, a strip of wood that will be glued to the wrestplank which defines the front terminus of the sounding length of the strings. In the Trasuntino, the nut is parallel to the front of the wrestplank, which is unusual. Most nuts are tilted at least a bit: the treble end is usually further from the front than the bass end.
That large T-shaped object is a home-made T-square. It will help me in laying out the curvature of the bentside (the curved side of the instrument) along the baseboard by drawing a number of straight lines from the nut towards the rear. The lines will have same lengths as a selected number of strings in the instrument, and their side-to-side location and spacing will be determined by using my newly-made registers as a measuring stick. This whole process merits its own post, so when I get around to it shortly, I'll go into more detail.
Next, I turned my attention to working on the interior framing of the instrument. This consists of a bunch of knees
which are notched triangular blocks (7" x 5", 3/4" thick) at the perimeter of the baseboard, holding up the liners:
The liners, which are 1.5" wide and 3/4" thick, form a ledge upon which the soundboard will rest, in addition to serving as the interior skeleton of the instrument.
That other notch in the back of the knee is parallel to the liner notch and will make it vastly easier to clamp the liner to the knee when the glueup happens.
Although I haven't yet cut out the curve on the baseboard, I thought it would be illuminating to lay out the horse and all the knees in their approximate locations to see how everything would look:
If you look closely, you can see two more knees behind the lower belly rail, propping it up from the back.
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