The tail stock (Fig. 7) is fastened to the bed in the same manner
as the headstock, except that thumb nuts are used on the carriage
bolts, thus allowing the tail stock to be shifted when necessary.
The mechanism of the center holder is obtained by using a 1/2-in.
[Illustration: FIG.7 Details of Tailstock]
pipe, A, and a 1/2-in. lock nut, B, embedded in the wood. I found
that a wooden tool-rest was not satisfactory, so I had to buy one,
but they are inexpensive and much handier than homemade tool rest.
--Contributed by Donald Reeves, Oak Park, Ill.
** To Use Old Battery Zincs [87]
When the lower half of a battery zinc becomes eaten away the
remaining part can be used again by suspending it from a wire as
shown in the cut. Be sure and have a good connection at the zinc
binding post and cover that with melted paraffin. This prevents
corrosion, which would otherwise occur from the action of the sal
ammoniac or other chemical. The wire may be held at the top by
twisting it around a piece
[Illustration: Showing Zinc Suspended]
of wood or by driving a peg through the hole in the porcelain
insulator.
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