When starting to drill a hole, which feeding approach is recommended?

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Prepare for the Machinist Apprentice Level One Test. Utilize flashcards and multiple choice questions, complete with hints and explanations, to ensure readiness for your exam!

Multiple Choice

When starting to drill a hole, which feeding approach is recommended?

Explanation:
The main idea is to start the drill with a gentle touch so the cutting edge can bite cleanly and establish a centered entry. Using a light feed at the start minimizes rubbing, reduces the risk of the bit grabbing or wandering, and keeps cutting forces manageable as the hole begins. Once the bit has established a small pilot cut and starts cutting properly, you can increase the feed to an appropriate rate for the material and drill size. No feed would not create a hole, and a heavier feed at the outset can push the bit off center, overload the tool, and lead to poor hole quality. Therefore, beginning with a light feed gives you better control and a cleaner start.

The main idea is to start the drill with a gentle touch so the cutting edge can bite cleanly and establish a centered entry. Using a light feed at the start minimizes rubbing, reduces the risk of the bit grabbing or wandering, and keeps cutting forces manageable as the hole begins. Once the bit has established a small pilot cut and starts cutting properly, you can increase the feed to an appropriate rate for the material and drill size. No feed would not create a hole, and a heavier feed at the outset can push the bit off center, overload the tool, and lead to poor hole quality. Therefore, beginning with a light feed gives you better control and a cleaner start.

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