-48-
For Machines Mfd. Since 7/21
South Bend Tools
Model SB1123
O P E R A T I O N
Cutting Curves
When cutting curves, simultaneously feed and
turn the stock carefully so the blade follows the
layout line without twisting. If curves are sharp
or tight, use a narrower blade with more TPI
(teeth per inch) and make relief cuts to avoid
having to back the workpiece away from the
blade.
Always make short cuts first, then proceed to
the longer cuts. Relief cuts reduce the chance of
the blade being pinched or twisted. Relief cuts
are cuts made through the waste portion of the
workpiece and are stopped at the layout line, so
when you're cutting along the layout line, waste
wood is released from the workpiece, alleviating
any pressure on the back of the blade. Relief cuts
also make it easier to back the workpiece out
once the saw blade has come to a stop, if needed.
The list below displays blade widths and the
corresponding minimum radii for those blade
widths.
Width
Min. Radius
1
⁄
8
" .............................................................
1
⁄
8
"
3
⁄
16
" .............................................................
3
⁄
8
"
1
⁄
4
'' ............................................................
5
⁄
8
''
3
⁄
8
'' ........................................................... 1
1
⁄
4
''
1
⁄
2
'' ........................................................... 2
1
⁄
2
''
5
⁄
8
'' ........................................................... 3
3
⁄
4
''
3
⁄
4
'' ........................................................... 5
1
⁄
2
''
One of the benefits of a bandsaw is its ability
to cut multiple copies of a particular shape
by stacking a number of workpieces together.
However, before making stacked cuts, ensure
that the table is perpendicular (90°) to the
blade—otherwise, any error in this setting will
be compounded in the workpieces.
To complete a stacked cut:
1.
Align workpieces from top to bottom.
2.
Secure all pieces together in a manner that
will not interfere with cutting. Hot gluing
along edges works well, as does brad nailing
through waste portion. (Be careful not to cut
into brads or you may break blade!)
3.
Lay out shape you intend to cut on face of
top piece.
Figure
Figure 70. Example of a stacked cut setup.
. Example of a stacked cut setup.
Stacked Cuts
4.
Make relief cuts perpendicular to outline of
your intended shape in areas where changes
in blade direction could strain woodgrain or
cause blade to bind.
5.
Cut stack of pieces along your layout line as
though you were cutting a single piece (see
Figure
70 for an example of a stacked cut
setup).
