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Grizzly G0709 Owner's Manual: Drilling With Tailstock

14" x 40" gunsmithing lathe.
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— if the stock is thinner at the tailstock end,
the tailstock needs to be moved toward the
rear of the lathe by at least the amount of
the taper (see figure 41).
looking down from above.
figure 41. Adjusting for tailstock end taper.
NOTICE
DO NOT forget to lock the tailstock to the
ways after each adjustment.
8.
loosen the tailstock lock lever and adjust the
tailstock offset by the amount of the taper.
9.
turn another 0.010'' off of the stock and
check for any taper.
10. repeat as necessary until the desired level of
accuracy is achieved.
Model G0709 (Mfg. Since 5/11)
Drilling with
Tailstock
the tailstock quill has an Mt#3 taper with a lock
slot at the bottom to accept tang-style tooling. if
the tooling will experience high torque loads dur-
ing operation, it is critical to use tanged-style to
prevent the drill bit or arbor from spinning and
galling the quill bore. restoring a galled bore
and taper can be time consuming or require quill
replacement.
however, tooling without tang-styled arbors can
be used if they meet the following criteria.
very little torque loads will be applied to the
tooling such as with centers.
the tap or drill bit is not larger than
diameter.
the end of the arbor is solid, or has a screw
threaded into the hole making the end of the
arbor solid. installing an arbor with a solid end
is important to avoid the arbor from becoming
stuck in the quill. some arbors equipped with
the hole are too short to be exposed in the
drift slot for removal, and the tailstock pin has
no surface to push against when using the
handwheel to remove the arbor. As a result,
the arbor becomes stuck requiring the quill
to be removed and the arbor driven out with
a punch.
" in
1
2
-37-

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