The fingerboard part III

Finally some real progress again. I had cut the fingerboard to approximate width already which made it a little difficult to plane the top surface to the correct curvature. So I decided to build a jig to help hold the fingerboard while planing. It turned out great and I think I would also next time do it this way. The fingerboard is still a little too thick, but it is pretty close to final thickness. I'll reduce it by 1 or 2 mm still.

I have been wondering about the geometry of the fingerboard. The curvature of the fingerboard is constant along it's length, basically the surface of a cylinder. If the edge has constant thickness, as is usual, there must be some scoop along the length of the fingerboard. Instead of a cylinder the the top is the surface of a bent tube or a banana. MJ Kwan has a nice post about the fingerboard geometry on her blog, fingerboard-geometry.