| 摘要 |
A portable grinding apparatus has a working plate movably mounted on a casing and oscillatable by a motor carried by the casing. The plate includes a top member having downwardly directed flanges and a bottom member adapted to carry on its lower surface on abrasive material and closing the open bottom of the top member. A pipe for connection to a suction device extends through the top member into the interior of the space between the top and bottom members. The bottom member and the grinding material have aligned holes to allow the flow of air and entained chips through the space to the outlet pipe.
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