Porter-Cable 28-306 - Manual (Page 15)

15
CUTTING CURVES
When cutting curves, turn the stock carefully so that the blade may follow without being twisted. If a curve is so abrupt that
repeated new kerfs are needed, then use either a narrower blade or one that has more set. The more set a blade has, the
easier the stock is to turn. However, the cut is usually rougher than when using a medium set.
When withdrawing the blade, be careful not to draw the blade off of the wheels. In most cases, it is easier and safer to turn the
workpiece and saw out through waste material. Do not back the blade out while the saw is running.
OPERATING THE BAND SAW
Before starting the machine, make all adjustments and put all guards in place. Turn the upper wheel clockwise by hand to be
sure that everything is correct before providing power to the tool.
Keep the top guide close to the work. Do not force the material against the blade. Light contact with the blade will permit eas-
ier following of the line and will prevent excess friction, heating, and work-hardening of the blade at its back edge.
Keep the saw blade sharp and very little pressure will be required for average cutting.
Avoid twisting the blade by turning abrupt corners.
DISCONNECT MACHINE FROM POWER SOURCE.
SUGGESTED METAL CUTTING BLADES AND SPEEDS
MATERIAL
STEELS
Angle Iron
Armor Plate
Carbon Steel
Chromium Steel
Cold Rolled Steel
Drill Rod
Graphite Steel
Hidfh speed Steel
Machinery Steel
Molybenium Steel
Nickel Steel
Silicon Manganese
Stainless Steel
Structural Steel
Tungsten Steel
FOUNDRY METALS
Brass-hard and soft
Bronze – Aluminum
Bronze – Manganese
Bronze _ Naval
Bronze – Phosphorus
Cast Iron – Gray
Cast Iron – Malleable
Cast Steel
Copper – Beryllium
Gunnite
Meehanite
Monet
Nickel – Cold Rolled
Nickel Silver
Silver
NON-METALS
Bakelite
Cork
Fibre
Hose –Canvas, Rubber
Hose – Mettalic
Mica
Plastics
Porcelain
Slate
Transite
TEETH
PER
INCH
24
18
24
24-18
24-18
14
18
24
18
18
18
18
24
24
18
18
18
18
18
18
18
18
18
18
24
18
18
14
18
24
10
10
14
10
24
24
14
24
24
24
FPM
160
40
85
85
220
85
60
85
160
85
40
85
40
160
40
335
335
160
160
335
115
160
160
160
335
160
115
60
220
220
335
3000
3000
3000
220
335
3000
160
335
335
TEETH
PER
INCH
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
18
14
14
10
14
18
10
10
10
18
14
18
18
18
FPM
160
40
60
60
220
60
40
60
160
60
40
85
40
160
40
335
335
115
115
335
85
115
115
85
220
115
85
40
220
220
220
3000
3000
220
3000
115
220
220
TEETH
PER
INCH
10
14
14
14
14
14
14
14
14
14
10
14
10
10
14
14
14
14
10
14
14
10
14
10
10
10
14
14
10
10
10
14
10
14
14
FPM
40
40
40
160
40
40
160
40
40
60
40
115
40
335
335
85
85
220
60
85
85
40
160
85
60
40
220
220
160
3000
3000
220
3000
160
85
UNDER ¼” 1/ TO ¾” 1 “AND UP