lf the number of double strokes per minute in a shaper is calculated by (0.643 Cutting speed in mm/min)/length of the stroke in m. Then the return speed is faster than the cutting speed by

lf the number of double strokes per minute in a shaper is calculated b

1.	lf the number of double strokes per minute in a shaper is calculated by (0.643 Cutting speed in mm/min)/length of the stroke in m. Then the return speed is faster than the cutting speed by
A.	40%
B.	60%
C.	80%
D.	100%
Answer» B. 60%

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lf the number of double strokes per minute in a shaper is calculated by (0.643 Cutting speed in mm/min)/length of the stroke in m. Then the return speed is faster than the cutting speed by

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