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TM 9-254
4-21. Lapping - Continued
Figure 4-47. Lapping on a Surface Plate
4-22. Files.
a.
General. This section contains a general discussion for proper selection of a file and method of filing. For a more
detailed discussion about files, refer to TM 9-243, Use and Care of Handtools and Measuring Tools.
b.
Selecting Proper Files. The following steps are recommended for selecting a proper file:
(1)
For heavy, rough cutting, a large coarse, double-cut file is best.
(2)
For finishing cuts, use a second or smooth cut, single-cut file.
4-52
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