--Contributed by Kenneth Weeks, Bridgeton, N.J.
** Cheap Nails are Expensive [244]
The life of iron shingle nails is about 6 years. An iron nail
cannot be used again in putting on a new roof. Solid zinc nails
last forever and can be used as often as necessary. As zinc is
much lighter than iron, the cost of zinc nails is only about 2-1/2
times that of iron nails.
** Cutting Lantern Slide Masks [245]
It has long been a puzzle to me why round cornered masks are
almost invariably used for lantern slides, when most works of art
are included within rectangular spaces, says a correspondent of
Photo Era. Certainly the present commercial masks are in very poor
taste. The worker who wishes to make the most of every slide will
do well to cut his own masks, not only because of the fact just
mentioned, but also because he can suit the size of the opening to
the requirements of each slide. Slides can be works of art just as
much as prints; so that masking a slide becomes just as important
as trimming a print, and equally worthy of individual treatment.
It is folly to give each slide a mask opening of uniform size and
shape.
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