Inch Threads - Shop fox M1099 Owner's Manual

Inch Threads

Use these steps to learn how to setup your lathe for inch
threading. The example in Figure 34 shows lathe setup
for cutting 64 TPI (Teeth Per/Inch) thread.
To setup for inch threading, do these steps:
1. DISCONNECT THE LATHE FROM POWER!
2. Turn the feed dials to the numeral and letter indi-
cated by the chart in Figure 34.
3. Using the chart in Figure 34, gather the required
change gears.
4. Open the side cover and use a 6mm hex wrench to
loosen the lash adjuster (Figure 32) and swing the
change gear assembly out of the way.
5. Remove the spindle E-clips and cap screw, lubricate,
and swap out the change gears in the order shown
on the chart in Figure 32.
6. Move the lash adjuster so the gear backlash is
between 0.003" to 0.008", tighten the lash adjuster
cap screw, and close the side cover.
7. Using a 5mm hex wrench, make sure the carriage
lock is loose (Figure 31).
a
b
Figure 34. Inch threading setup.
-30-
Model M1099 (Mfg Since 8/07)
During threading keep your hand on
the half-nut lever ready to disengage
the half nut to avoid potential carriage/
chuck crash.
Figure 33. Thread dial chart and
thread dial.
8. The lathe is now setup for threading.
Note: For faster threading and manual
carriage return, based on which TPI
being cut, refer to the Indicator Table
in Figure 33 to know if you can use
the thread dial scale to show when to
re-enter the thread manually after dis-
engaging the half nut lever.
= 64 TPI
Inch
Thread
Chart