The Bullet Shooting Crossbow - English (Continued)
How to Make and Fit the Bowstring
A, fig. 124, opposite page, is the skein of fine twine, side and surface
view - bookbinder's twine for preference, then the strong brown packthread
employed for sewing carpets and other thick materials. The twine should
be wound - about 120 times - round and round two smooth pegs of wood (each
1/2 in. in diameter) driven upright into holes in a board. The pegs should
be fixed with their outer edges at a distance from one another that is
1/2 in. shorter than the distance between the notches at the ends of the
Fig. 125. - One End of the Skein on Its Peg. Side
and Surface View. Half full size.
Each half of the skein when its threads are pressed together, should
be about as thick as an ordinary lead pencil, fig. 125.
B, fig. 124, shows the skein as it appears after it has been removed
from the pegs.
The outside wrapping of fine twine to be seen on the skein, (B, fig.
124,) holds its threads together when it is taken off the pegs and prevents