How to ream or countersink holes by twist drill bits?

In actual work, we will encounter some special machining phenomenon, such as machining a larger diameter hole, or bottom of hole should beflat. Today, here we introduce reaming and countersinking, let’s go.

Countersink Holes usually involves countersinking flat-bottomed hole and countersinking tapered counter bore.

Countersink Holes usually involves countersinking flat-bottomed hole and countersinking tapered counter bore.

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