见有食店用这个, 很快很方便 连接见內

来源: 于 2017-09-22 14:17:08 [旧帖] [给我悄悄话] 本文已被阅读：次

Manual Hand Grinder Stone Jewelers Bench Repair Tool

https://www.amazon.com/Manual-Grinder-Stone-Jewelers-Repair/dp/B000RB29QK/ref=sr_1_72?ie=UTF8&qid=1506114377&sr=8-72&keywords=hand+grinding+stone 

or

Grinding stone attachment for electric drill