9934| 13
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吃水不忘挖井人 |
本帖被以下淘專輯推薦:
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點(diǎn)評(píng)
紫銅,比較容易搞到
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點(diǎn)評(píng)
其實(shí)磨不動(dòng),,只是污物,鐵削把砂輪糊滿了,,致使金剛石不參與切削了,。他的基體是塑料(樹脂),磨銅的時(shí)候把污物,。鐵削等粘出來,,高溫把塑料磨掉,把金剛石裸露出來就OK了
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