請教日本天然砥石研磨面

artist1128

一直以來有個疑問，昂貴的日本天然砥石，正面蓋了許多產地與檢驗、分級的章，砥石本來就不是太大，又蓋了一堆身分戳章，大家究竟如何研磨呢?都避開戳章部分嗎?那不是能用處更小了?
況且無法整平，整平個幾趟大概章都不見了，身分與價值頓失，請教大神們都如何處理呢?


例如:

zola_4

你图片里的这些印记基本都没有保留的价值，保留一些特别的印记，是砥石收藏者的做法，就跟集邮一样。

po52177

学习了

勇气777

33333

勇气777

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rW7EldDE7

dancing.
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梦里人

…留字干嘛

网中人

这种感觉收藏比较多吧。