To mount the chuck onto the lathe:
1.DISCONNECT LATHE FROM POWER!
2.Thoroughly clean threads of spindle and chuck bore with mineral spirits and a stiff brush.
3.Properly mount top jaws onto bottom jaws.
4.To prevent chuck binding to spindle under operational forces, apply a thin coat of ISO 32 or equivalent oil to spindle threads.
5.Thread chuck onto spindle and hand tighten. It should screw on without binding or exces- sive play.
6.Lock spindle in place.
7.Back chuck off slightly, then quickly rotate chuck onto spindle. This will firmly seat the chuck.
Indexing
The chuck back plate has indents and num- bers for performing indexing operations. Indexing allows the circumference of the workpiece to be divided into equal segments.
An indexing arm (not included) is required to take advantage of this feature. Research books and the internet to better understand the process, what is required, and how to perform indexing operations.
When mounting workpiece on jaws, do not contact workpiece with the lower flat of jaws. This provides better gripping power and avoids any inconsistencies between surfaces that would interfere with true rota- tion.
Model T10808 Wood Lathe Chuck Set
Chuck Types
The best jaw type to use is the one that will pro- vide the greatest contact between the jaw and the
Round Jaws
Round jaws (or dovetail jaws) are typically either closed around a tenon (or foot) turned on the bot- tom of a bowl, or they are expanded into a recess cut into the workpiece. The tenon is later removed with the workpiece mounted on the flat jaws.
A dowel workpiece can also be fed through the center of the chuck and spindle bore, and gripped with center surfaces of the jaw flats. As each piece is turned and cut off, the dowel can be advanced for the next piece.
The #2 round jaws have a slight dovetail profile. If a matching profile is cut into the recess, the jaws can expand with much greater gripping power.
#2 Round Jaws
The #3 round jaws can hold much larger workpieces than the #2 round jaws and have ridges that press into the wood for a better grip.
#3 Round Jaws