Grizzly G8688 - Manual (Page 24)

-22-
Model g8688 (Mfg. 3/09+)
Stock protruding more than 2 1 ⁄
2
times its diameter
should be supported by a dead or live center.
oil the tip of the dead center and use a very slow
rpM during use. heat from friction will reduce the
life of the center, and may damage the workpiece.
if speed is important, invest in a live center.
To install the dead center:
1. Make sure the dead center and tailstock quill
are clean and free of any dirt, dust, grease,
or oil. Morse tapers will not interlock when dirt
or excessive oil are present on the mounting
surfaces.
2. Extend the quill approximately 1" by turning
the tailstock handwheel.
3. Slide the dead center into the tailstock quill.
the tapers will hold the center in place. during
use, do not extend the quill less than 0, and
no greater than 1
1 ⁄
2
" on the quill scale.
To remove the tailstock dead center:
1. use the tailstock handwheel to move the
tailstock quill all the way back into the
tailstock. this will push the dead center out
of the quill.
Dead center Tool post
the tool post can rotate to four 90 degree preset
stops or at any angle in between and hold a maxi-
mum of four tools at a time.
To use the tool post:
1. Select a cutting tool that will produce the
desired cut.
2. Secure the tool with a minimum of two cap
screws with as little overhang as possible.
this will help maintain rigidity and provide
better results (see
figure 19).
figure 19. proper tool post set up.
3. Make sure the tip of the tool is right at the
centerline on the workpiece. if it is not, use
shims under the tool to bring it up to the cen-
ter line. this lathe uses
5 ⁄
16
" tools.
Note: To check if the tip is at the correct
height, position the tool tip at the tip of the
dead center in the tailstock.
—if the two tips are even or the tool tip is
lower than the dead center tip, the tool is
at the correct height.
—if the tool tip is above the dead center tip,
it needs to be replaced with the correct tool
or ground to bring it to center.