Cutting Curves - Delta 28-206 Instruction Manual

CHANGING BLADE SPEED
FOR MODEL 28-206 ONLY
1. DISCONNECT MACHINE FROM POWER SOURCE.
2. Open the pulley guard (A) Fig. 37, by removing screw
(B) and opening the pulley guard door.
3. Lift and hold the motor up, place the belt on desired
step of the pulleys, and release the motor.
4. The two motor speeds are 3300 fpm (feet per minute),
and 2500 fpm.
3300 fpm is the combination of the large motor pulley
(3.15" dia) and the small saw pulley. This speed is for
general work.
2500 fpm is the combination of the small motor pulley
(2.65" dia) and the large saw pulley. This speed is for resaw
work.
Before starting the machine, insure that all adjustments are properly made and the guards are in place. Turn the upper
wheel by hand to make sure that everything is correct BEFORE turning on the power.
Keep the top guide within 1/8" of the work piece at all times. Do not force the material against the blade. Light pressure
on the work piece will produce a smoother cut, and prevent excess friction, and heating of the blade.
KEEP THE SAW BLADE SHARP. Very little forward pressure is required for normal cutting. Keep the workpiece
moving at a slow and consistent rate against the blade to ensure a smooth and accurate cut.
Avoid twisting the blade, by trying not to turn sharp corners. Remember, you must saw around corners.
When cutting curves, turn the stock carefully so that the blade follows without twisting. If a curve is so abrupt that it is
necessary to repeatedly back up and cut a new kerf, a narrower blade, a blade with more set, or additional relief cuts
Fig. 39, may be necessary to allow the blade to cut more efficiently. The more set a blade has, the easier it will allow
the stock to be turned, but the cut is usually rougher.
When withdrawing the piece being cut, changing the cut, or for any other reason, be careful not to accidentally draw
the blade off the wheels. In most cases, it is easier and safer to turn the stock and saw out through the waste material,
rather than try to withdraw the stock from the blade.
OPERATIONS

CUTTING CURVES

Fig. 39
19
B
Fig. 37
A
Fig. 38
A