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Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com
5. Observe the rotating Dial. In particular, concentrate on one of the
numbered marks etched on the dial which corresponds to the scale
number given in the Indicator Table.
• (In our example, this could be 1,3, 5 or 7)
• As your line passes the mark on the body of the dial indicator, engage
the auto lever sharply and thread cutting will commence.
6. As the tool approaches the end of the desired thread, DISENGAGE THE
AUTO FEED LEVER. Do not switch the machine OFF.
7. Retract the tool, using the cross-slide feed handle, noting the exact
position on the scale and the exact number of turns.
Wind the saddle back to the beginning and reset the tool by winding IN the
cross-slide the exact number of turns previously wound OUT and then continue
to wind IN to the desired depth of cut.
8. With the lathe still running, observe the dial indicator and as the same
numbered line passes the mark on the body, engage the auto feed lever
once again. Proceed in this manner until the thread is completed.
• Engaging the auto feed lever as your predetermined line on the dial
passes the mark on the body ensures the half nuts of the auto feed
mechanism engage in the same thread on the leadscrew each time.
This ensures the cutting tool is in the same place for each pass which in
turn produces a perfect thread.
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