Define chamfer and provide comprehensive information about how chamfers are dimensioned.
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A chamfer is a slight surface angle used to relieve a sharp corner. Chamfers of 45° are dimensioned with a note, while other chamfers require an angle and size dimension, or two size dimensions. A note is used on 45° chamfers because both sides of a 45° angle are equal. When placing the 45° chamfer note, the size is followed by the (X) symbol and then the 45° angle without spaces. For example, 3X45°. Both sides of a 45° angle are equal. For this reason, another option is to place the value for the dimension of the sides in the note and leave out the 45° angle, such as 3 X 3.
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