Before you change from one tapered-shank drill bit to another, make sure to

1. Clean the chips from the shank and spindle
2. Lubricate the spindle shank
3. Remove the old bit with a file
4. Sand any nicks or burrs off the chuck

You back a large-diameter drill out of thick stock periodically and clear out chips to avoid

1. Breaking the drill
2. Changing lubricants
3. Excessive rpm of the drive motor
4. Spontaneous ignition of the chips

What is a good rule to follow in planning the order of machining steps?

1. Never change the setup between drilling and counterboring a hole
2. Never change the setup between drilling and spotfacing a hole
3. Plan the order to include as few changes in setup as possible
4. Use the most powerful machine that will do the work

Answer rating: 100% (QA)

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