84 make an end mill or slot drill from a standard HSS drill

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Ann L Johnson, Dianne Dunning Ventral Cervical Slot: Drill the proposed ventral slot site with a pneumatic air drill using a burr of appropriate size

The meaning of SLOT-DRILL is to cut out with a traverse drill  Ninja trick for chain drilling: Lay out an odd number, drill the odds first then the evens That way the material on either side of the hole

new slot demos slot drill Land & Environment slot drill 00:23:37  प्र : एक स्लॉट ड्रिल क्या है और इसका उपयोग किस सामग्री में किया जाता है? Ninja trick for chain drilling: Lay out an odd number, drill the odds first then the evens That way the material on either side of the hole