銼刀銼不了這麽光滑,鉗工最後要用砂皮,金相砂打光
所有跟帖:
• 金剛砂是用來研磨的,打光,準確的說是拋光,用的是拋光料。我幹研磨,拋光四年多。 -信筆由墨- ♂ (0 bytes) () 07/23/2021 postreply 18:20:56
• 金剛砂是用來研磨的,打光,準確的說是拋光,用的是拋光料。我幹研磨,拋光四年多。 -信筆由墨- ♂ (0 bytes) () 07/23/2021 postreply 18:20:56
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