-8-
Model T10809 Wood Lathe Chuck Set
Woodworm Screw
The woodworm screw is typically used with the
#2 round jaw set for holding small items. Refer to
the illustration below for closing the round jaws
around the base of the screw.
Woodworm Screw
The woodworm screw has a very coarse 45°
thread that provides a positive grip in the wood.
Using the woodworm screw is an easy way to
mount a blank workpiece, but does not provide the
gripping power that the other jaws do. For heavy,
unbalanced workpieces or ones that require more
gripping power, use one of the jaw types or screw
the workpiece to a faceplate.
When using the woodworm screw, make sure the
workpiece is as round as possible, then drill a
5
⁄
16
"
x 1
1
⁄
4
" hole in the waste portion of the workpiece.
Thread the workpiece onto the screw until it is
seated firmly against the chuck.
Bottom Jaw Removal & Installation
If it is necessary to remove the bottom jaws for
maintenance or replacement, follow these steps
to ensure the jaws will safely and evenly grip
workpieces.
To remove the bottom jaws:
1. Remove top jaws.
2. Using chuck key, bring bottom jaws together
in center of chuck. This will provide access to
safety set screw.
3. Remove safety set screw under bottom jaw
#4 (see example below) and set it aside.
Safety
Set Screw
4. Insert chuck key and rotate it counterclock-
wise to move the bottom jaws away from
center of chuck.
5. Remove jaws one by one as they disengage
from the scroll gear.