Maintenance; Sanding, Buffing And Polishing; Using Of Lathe To Sand Turnings; Use Of Sanding Drums - Craftsman 351.217150 Operator's Manual

SANDING, BUFFING AND POLISHING
USING THE LATHE TO SAND TURNINGS
• Turnings should be sanded with the lathe running in sec-
ond lowest speed.
• A large sheet of sandpaper is useful for smoothing cylinders.
• All other sanding operations are done with a narrow strip
of abrasive paper. The best finishing grit is 3/0 for soft-
wood, 4/0 for hardwoods. Worn 2/0 paper is often used,
and is the equivalent of 3/0 or 4/0 new paper.
Figure 75
The application of the sandpaper strip is shown in the illustrations.
Care must be exercised in order to prevent dubbing the
corners of beads, shoulders, etc.
Figure 76
Coves
Wood Fibers
@
Sandpaper
Fibers lifted and Cut Off
USE OF SANDING DRUMS
Refer to Figure 77.
Standard sanding drums are usually rubber cylinders which
can be expanded to hold an abrasive sleeve in place. Similar
cylinders, turned on the lathe and covered with abrasive
paper, will be adequate for the job. These have the advantage
that special sizes, tapers, etc. can be made. Adhesive papers
must be glued to the cylindrical surface precisely and com-
pletely.
Figure 77
The drum is used mainly for sanding the edges of curved work.
• The squareness of the edge of the work can be best
retained by using a simple form of vertical fence as shown.
• The standard sanding drums are commonly made with a
threaded hole to fit the lathe drive spindle.
• To guard against loosening of the taper shank while the
drum is in operation, it is advisable to support the free end,
using either a ballbearing or plain 60 ° center in the tail stock.
USE OF WOOD CHUCKS FOR SANDING
Quick-acting chucks can be very useful for sanding operations
on duplicate production parts. The chuck is made slightly
oversized, and a piece of rubber hose (for small parts) is
inserted in the recess to grip the workpieces.
Figure 78
WARNING:
Make certain that the unit is disconnected from
power source before attempting to service or remove any
component.
CLEANING
Keep machine and workshop clean. Do not allow sawdust to
accumulate on the tool. Keep centers clean.
Be certain motor is kept clean and is frequently vacuumed
free of dust.
Use soap and water to clean painted parts, rubber parts and
plastic guards.
LUBRICATION
The shielded ball bearings in this tool are permanently lubri-
cated at the factory. They require no further lubrication.
KEEP TOOL IN REPAIR
• If power cord is worn, cut, or damaged in any way, have it
replaced immediately.
• Replace any damaged or missing parts. Use parts list to
order parts.
Any attempt to repair motor may create a hazard unless
repair is done by a qualified service technician. Repair service
is available at your nearest Sears store.
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