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Académie
Machinist
Machinist Red Seal Certification
Power Saw & Drill Press Operations
Vérification des connaissances
Power Saw & Drill Press Operations
Vérification des connaissances
Vérification des connaissances
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What is the purpose of spot drilling before drilling with a twist drill?
A
To mark the workpiece surface for layout purposes only
B
To provide a conical guide that prevents the drill from walking and accurately locates the hole
C
To deburr the entrance of the hole before drilling
D
To countersink the hole for a flathead screw
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