# Lesson 6: Dies and Reamers

WORD LIST

 1. shaft the long, thin part of something like the wood in an arrow. Example: The flag is usually hung at the end of a shaft. 2. cylinder a solid piece with two round ends and straight sides. Example: A soda pop can is shaped like a cylinder. 3. surround to flow around or be all around something. Example: The old man was surrounded by his children at the party. 4. damage to cut, break, scratch, mark or injure in any way. Example: Sometimes the threads on threaded pieces are damaged when a machinist uses a wrong tool. 5. split to cut something into two pieces. Example: My sister and I split the money; she got \$20 and I got \$20. 6. halves more than one half; one of two equal parts. Example: A split die had two halves that fit around the round workpiece. 7. smooth very even: having no bumps or raised parts. Example: A baby’s skin is very smooth. 8. exact correct, accurate, not differing from what is required. Example: She paid the exact amount of the bill, \$12.38. 9. diameter the length of a line drawn from one side of a circle to the other and passing through the center. Example: the diameter of the gear is exactly 12.015 inches. 10. guide a person or thing which leads, directs, shows which way to go. Example: A map is good guide for finding new places. 11. fine thin, not wide. Example: He drew a fine line with his pencil. 12. friction the resistance of two objects to moving across each other when they are touching. Example: When you rub your hands together, the friction from the rubbing will cause that.

Vocabulary Practice

DIES AND REAMERS

Exercise 1

Exercise 2

Exercise 3

Exercise 4

Exercise 5

Reread Dies and Reamers above. Read the following statements and answer “T” if the statement is true; answer “F” is the statement is false.

End of Lesson Test

Listening Test

Look at the pictures. Listen to the words. Write the letters in the spaces below.

Click here to listen to the recording.

Writing Test

Look at the pictures. Write the names in the spaces below.