Also, if the burr is very elastic, and tends to just flop side to side rather than getting harder to feel as you use lighter strokes or finer grits, that is a bad sign.
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美
释义
同样地,当你使用细目砂轮(带)打磨时如果卷边很有弹性地在刀锋两边移来移去就是个坏信号。
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