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 1⁄4" x 7⁄8" 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 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.
Model T10808 Wood Lathe Chuck Set