Bimetallic Hole Opener Bm Type Use Method
Note:
The handle part of the motor clamp as far as possible, so that it will not fall off during rotation.
In order to prevent drilling when the cutting material is stuck and caused by the collapse of the edge, so the motor speed can not be adjusted too low.
In order to prevent edge breakage, when the center drill through the cut, please do not allow the edge of the hole and the cut to have a violent impact.
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