Tag Archives: drilling methods of blind holes

March 6, 2019

Methods of drilling twist drill and points for attention

Drilling methods: Before drilling, the workpiece plane should be leveled. No convex platform is allowed in the center to facilitate the correct centering of the twist drill.  Align the tailstock so that the center of the twist drill is aligned with the axis of rotation of the workpiece. Otherwise, the diameter of the hole may […]

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