TM 9-243
USING A SOLID STRAIGHT - HOLE REAMER - Continued
4
Turn the wrench clockwise with a steady, firm pres-
5
Remove the reamer from the hole by turning the
sure until the reamer has been turned in the hole.
wrench clockwise and raising the reamer at the
When reaming steel, use cutting oil or machine oil to
same time.
lubricate the tool. When reaming soft iron, do not
lubricate the tool. Turning the wrench too fast or too
slowly will cause the reamer to chatter, producing
an unevenly reamed hole.
CARE OF REAMERS
1.
2.
3.
4
Keep reamers absolutely clean to do accurate work.
Do not use the reamer to remove more than 0.002 to
0.003 inches of metal. If the hole is too small,
enlarge it with a drill before reaming it.
If the proper pressure is applied in use and the
reamer chatters, replace it to insure accurate work.
If the reamer edges are only slightly dulled, honing
the edges on an oilstone may restore the sharp-
ness. On an adjustable reamer, the blades may be
replaced.
5.
6.
7.
To prevent chipping or dulling the reamer when you
are reaming a hole, turn the reamer in the cutting
direction only.
To prevent damage to the reamer for short-term
storage, wrap it in an oily cloth and keep it in a box.
For long-term storage, clean reamer thoroughly and
coat with rust-preventive compound. Wrap each
reamer separately in oiled cloth and store in a dry,
safe place.
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