When the flange is close to 90 degrees, lower the bending leaf and unclamp the sheet metal by raising the clamping leaf <e1>handles</e1> of the <e2>hand brake</e2>.
When the flange is
When the flange is close to 90 degrees, lower the bending leaf and unclamp the sheet metal by raising the clamping leaf handles of the hand brake.
<triplet> handles <subject> hand brake <object> Component-Whole(e1,e2)