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Mandrel No. 401
is used with the felt
polishing tip and wheels. Thread the tip on to
the screw carefully. The felt tip must thread
down straight on the screw Mandrel, and be
turned all the way to the collar.
Mandrel No. 402
has a small screw at its tip,
and is used with emery cutting wheels and
sanding discs. Higher speeds, usually
maximum, are best for most work, including
cutting steel. Which is shown here.
The machine-screw threading on
Mandrel
No. 424
threads into polishing point No. 427.
This and other threaded mandrels must be
screwed firmly down to the collar before being
used.
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