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Tip
#51
Shopsmith
Scroll Saw (continued)
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here for a printer friendly version of Tip -
Pg 1-3, Pg 4-6,
Pg 7-9,
Pg
10-11, Pg 12-13
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Patterns
& Layout
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Figure
15-3 .
The grid system is commonly used to enlarge an illustration
to create full size patterns. Click on image to see
larger view.
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Full size
patterns for scroll saw projects are available in magazines
and books as well as from commercial suppliers who provide
letter templates for signs or complete project plans. If your
plans are not full size, they can be enlarged by methods such
as the grid system (Figure
15-3) or by using a pantograph (Figure
15-4).
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Figure
15-4 .
A pantograph makes enlarging or reducing plans quick
and easy. Click on image to see larger view.
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Another
very effective way to produce full size patterns is by using
a copier machine which can enlarge and reduce. By making an
enlargement of an enlargement, small drawings can be quickly
and accurately increased to many times their original size
and the cost is minimal, even if several copies are required.
The full
size pattern can then be transferred to the stock in several
ways. For light colored wood you can use carbon paper or trace
around a heavy paper cutout of the piece. On darker woods
or for very accurate work it is usually easier to attach the
pattern directly to the stock before cutting (Figure
15-5). This can be done with a thin coating of rubber
cement or with a spray adhesive.
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Figure
15-5 .
With dark woods or for more accurate results, patterns
can be mounted directly to the stock.
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After
the stock has been cut, you can easily remove the pattern
by belt sanding. If the pattern is reversible, you can even
leave it attached to the back side of the project. In either
case, the pattern will be destroyed, so you will want to make
copies for duplicates or in case of cutting mistakes.
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