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Tweezers are indispensable to assembling record stylus. 

A senior craftsman said “I used to keep having tweezers from morning to end of the work.”

Adjust the opening angle.
Sharpen the tips for fitting the shapes.

New tweezers are hard so the handle side is needed to be sharpen for being soften.

And the tips are needed to be sharpen for fitting shapes of left and right side.

Many kinds of sandpapers are used for finishing. 

As tweezers are used they become magnetized, so are needed to be demagnetized.

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