be a block ready for shaping with a sanding stick or fi le. A small reamer is also useful to clear any excess glue in the sheave holes. (Figure 14)
T e mastheads and jeer blocks also require very small slots for the sheaves, which are 0.010-inch thick for the fore and main jeers and around 0.006-inch for the mizzenmast. But because of the thickness of these blocks, and because I chose to make them of ebony— both factors that make drilling almost impossible—I built rather than shaped them.
I used a table saw to cut shallow slots in pieces of ebony the length (height) of the sheave diameters plus
18. T e fi nished upper and lower mizzen jeer blocks (two cleats will be next added to the sides of the lower block).
