Question 1 of 27070
Q
Which of the files listed is produced with two safe edges?
A
Mill
B
Pillar
C
Half round
D
Knife
Question 1 / 270705eccef9bbacbc34ba4d4515a
Question 1 of 270705eccef9bbacbc34ba4d4515a

Which of the files listed is produced with two safe edges?

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Question 1 of 27070
Q

Which of the files listed is produced with two safe edges?

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🔍 Key Concepts

• Safe edge on a file (what it means and why it’s used) • Typical shape and use of mill, pillar, half‑round, and knife files • Which file is commonly used where you must avoid cutting adjacent surfaces

💭 Think About

• Think about which file would most likely be designed so it can work in a narrow slot or between shoulders without damaging the sides. • Which of these file types is usually rectangular and narrow, so that having smooth (uncut) edges would be especially helpful? • Eliminate any file shapes that normally need to cut along their edges as part of their design.

✅ Before You Answer

• Be clear on what a safe edge is: an edge with no teeth so it will not cut. • Visualize each file’s cross‑section: which ones are flat with straight sides and which are curved or wedge‑shaped? • Before choosing, ask: for this type of file, would two smooth edges make sense, or would it ruin its intended use?