Instructions

A Note on Mounting the Right Angle Attachment
On the side of the worm housing (see exploded view on page
16) are four holes, which are used to mount the optional right
angle attachment, P/N 3701. They go all the way through
the part. In order to keep dirt and chips from entering the
worm housing, set screws have been installed in the holes.
Before the right angle attachment can be mounted, these set
screws must be removed. Be sure to reinstall them when
the right angle attachment is removed.
FIGURE 14—The adjustable right angle tailstock
Adjustable Right Angle Tailstock, P/N 3702
(See Figures 12 and 14.) Because of tolerance build-up,
it would be just about impossible to offer a tailstock that
was perfectly on center with the rotary table and right angle
attachment. The solution offered here is a modification of
our standard tailstock, which allows it to be adjusted to
exactly line up with the center of the rotary table in order
to allow for perfect alignment between the rotary table and
the tailstock while holding long parts between centers. The
base is attached to the mill table with cap screws and T-
nuts. The two socket head cap screws go through elongated
slots in the side of the right angle piece and allow for minor
adjustments in height when making your setup.
Purchasing Gear Cutters
Gear cutters may be purchased from large, industrial tool
suppliers. One of the best known is Manhattan Supply
Company in New York. They may be reached at (800) 645-
7270 or you may go to their web site at www.mscdirect.
com to order their catalog or CD-ROM. For example, on
page 540 of their 1999 catalog, an involute gear cutter with
14-1/2° pressure angle and a 24 pitch in a #3 cutter is P/N
03192432 and lists for $20.70 (1999). They carry a complete
selection of 14-1/2° and 20° HSS gear cutters in stock.
Range of Cutters
CUTTER # CUTS GEARS FROM
2 55 to 134
3 35 to 54
4 26 to 34
5 21 to 25
6 17 to 20
7 14 to 16
8 12 to 13
FIGURE 16—Arbors with a #1 Morse taper are designed
to fit the Sherline headstock and hold round gear cutters.
Gear Cutter Arbors
Round gear cutters like the ones described above can be
held on Sherline tools using Sherline’s mill cutter arbors.
They are available to hold 7/8" or 1" I.D. cutters and come
in short (3/4") or long 1-3/4" standoff lengths. They have
a #1 Morse taper with drawbolt and are designed to fit A
Sherline headstock. Part numbers are 3230–7/8" short,
3231–7/8" long, 3235–1" short and 3236–1" long. The long
cutter holders are designed to allow large diameter gears to
be cut without interfering with the Sherline headstock.
Clock gear cutters can be hard to find, but they are available
from Hirschmann Antique Clocks, P.O. Box 194, Titusville,
NJ 08560-0194. Their phone number is [phone]
and their fax number is [phone].
I have repeated some information from section to section,
as I know some people don’t read instructions from front
to back. They just search for the part that answers their
immediate question. So, if my instructions seem somewhat
redundant, please forgive me. I could be living on a 60’
yacht in the South Pacific if I could recover the money in
scrapped parts I’ve had employees produce by cutting first
and thinking later!
We at Sherline wish to thank our customers for their
continued support. It is becoming very difficult to compete
in a world market where employers in the US pay more in
benefits per month than the entire wages paid to workers
in third world countries. We survive by having modern
equipment and facilities with skilled workers that care about
our customers and product line. We believe it shows, and
it is our way of thanking you.
—Joe Martin, President and owner
Sherline Products Inc.
Bryan Mumford
Mumford Micro Systems
FIGURE 15—A 14-1/2° HSS
involute gear cutter
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