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Analysis of operative training content of the farm job of filing and setting a crosscut handsaw-Continued

Operations

Standard practice

Related information

2. Shaping teethContd.

should be held in that position so
that the angle can be established.
With the file in the proper position,
swing the right hand up and clasp the
handle of the file firmly in a natu-
ral position without strain so that
the hand and arm operating on the
shoulder joint as a pivot tends to
maintain the file at the original angles
in which it was at the start.

With the file in this position, give two or
three vigorous strokes between each
successive pair of teeth, the file in each
case being between the front part of a
tooth on the opposite side and the back
part of a tooth on the operator's side.
When the point of the saw is reached,
retain the position of the file in the
hand, but change the position of the
operator's body so that the 60° angle
with the side will be measured from the
point rather than from the heel. Then,
proceed with the same number of
strokes between each pair of teeth with
the file running in front of successive
teeth on the operator's side until the
heel is reached. If flat faces still re-
main on some of the teeth, repeat the
entire procedure with a varying num-
ber of strokes on the front and back of
each tooth until all of the respective
angles and spaces are equal.
Care should be taken not to bring the

teeth to an actual point in this opera-
tion, but merely to remove the flat |
face.

3. Setting--- Adjust saw set to size of teeth or number
of points per inch. Place saw with
most of it projecting out of the clamp,
or hold it between operator's knees
while seated. Set the point of every
other tooth so that it bends to the left
while looking along the line of the
teeth. Reverse the position of the saw
and set every other tooth on the oppo-
site side in a similar way.

Set teeth less than half the length of a
tooth to avoid breaking. The amount
of set depends upon the kind and con-
dition of lumber to be cut. The set will
have to be wider for soft and green or wet
lumber than for hard and dry lumber.
Too wide a set results in removal of too
much wood in the saw kerf, waste of
energy in sawing, and a rough cut.
The saw kerf should be as narrow as
possible without pinching.

Recognition of saw

set and parts for adjusting it; saw kerf of proper size; and too wide a saw kerf.

Analysis of operative training content of the farm job of filing and setting a crosscut handsaw-Continued

Operations

4. Sharpening teeth.

Standard practice

Place saw in clamp, as in operation No. 2.
Proceed, using light strokes from heel
to point, as in operation No. 2, until
the teeth on one side of the saw have
been brought to a sharp point, which
may be ascertained by feeling and
observing. When sharp, the point
will dig when the finger is moved
lightly across it and the shiny tip will
disappear.

Now, reverse the saw in the clamp and
proceed to file the teeth on the side
which is now away from the operator,
maintaining the same angles, but with
the file of necessity held in a different
position in the hand.

This filing of the opposite side of a saw

All

with the saw reversed or pointed to the
left is the most difficult thing for an
amateur to learn, because the arm
thrusts and positions are different.
of the strokes should be lightly and
carefully made. This is the reason
why as much as possible of the filing
should be done under operation No. 2,
where the work can all be done from
one side of the saw and without chang-
ing the relative position of the file with
respect to the line of sight. The saw
is reversed in this operation in order to
draw the wire edge out equally on the
teeth on both sides.

Related information

Recognition of look and feel of a sharp point.

5. Side dressing.

Lay the saw flat on a board or bench and
pass a fine whetstone over the teeth on
each side of the saw lightly and with a
circular motion. Turn the saw over
and treat the teeth similarly and
equally on the opposite side. If the
saw has too much set, this can be re-
duced by additional side dressing; but
the primary purpose is to remove the
rough wire edges which have resulted
from filing.

Recognition of wire edge and proper set.

VOCATIONAL EDUCATION

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1919, 1920, 1921, 1922, 1923, 1924.

ANNUAL REPORTS TO CONGRESS

YEARBOOK, 1923

General Description of Outstanding Developments and Summary of Progress by States. Vocational Education. Civilian Vocational Rehabilitation. On sale by Superintendent of Documents, Govern. ment Printing Office. Price, 60c.

Agricultural Education, 1923 (published separate from General Survey). General Description of Outstanding Developments and Summary of Progress by States. On sale by Superintendent of Documents, Government Printing Office. Price, 15c.

CONFERENCE REPORT

Report of Proceedings of the First National Conference on Vocational Rehabilitation of Persons Disabled in Industry or Otherwise. St. Louis, Mo., May 15, 16, 17, 1922.

BULLETINS

1.Statement of Policies. Revised edition, April,

1922.

13. Agricultural Education-Organization and Administration. (Agricultural Series, 1.) Revised edition, February, 1925. On sale by Superintendent of Documents, Government Printing Office. Price, 10c.

16. Emergency War Training for Radio Mechanics and Radio Operators.

17. Trade and Industrial Education-Organization

and Administration. (Trade and Industrial Series, 1.) Revised edition, March, 1924. On sale by Superintendent of Documents, Government Printing Office. Price, 10e.

20. Buildings and Equipment for Schools and Classes in Trade and Industrial Subjects. (Trade and Industrial Series, 4.)

21. The Home Project as a Phase of Vocational Agricultural Education. (Agricultural Series, 3.)

22 Retail Selling. (Commercial Series, 1.) 23. Clothing for the Family. (Home Economics Series, 1.) On sale by Superintendent of Documents, Government Printing Office. Price, 15c.

25. Agricultural Education-Some problems in State Supervision. (Argicultural Series, 4.) 27. Training of Teachers of Vocational Agriculture.

(Agricultural Series, 5.)

23. Home Economics Education-Organization and Administration. (Home Economics Series, 2) Revised edition, February, 1924. On sale by Superintendent of Documents, Government Printing Office. Price, 10c.

30. Evening and Part-Time Schools in the Textile

36. Foreman Training Courses. Part I. Foreman Training and the Vocational Education Act. Suggestive Schedules for Eighty-two Foreman Meetings. The Needs of Fore

man Training-Some Past Difficulties. Planning and Initiation of Foreman Training Courses. Conducting Foreman Training Courses. (Trade and Industrial Series, 7.)

36. Foreman Training Courses. Part II. Suggestive Instruction Material. (Trade and Industrial Series, 7.)

38. General Mining. (Trade and Industrial Series, 8.) On sale by Superintendent of Documents, Government Printing Office. Price,

15c.

3. Coal-mine Gases. (Trade and Industrial Series, 9.) On sale by Superintendent of Documents, Government Printing Office. Price, 5c.

40. Coal-mine Timbering. (Trade and Industrial Series, 10.) On sale by Superintendent of Documents, Government Printing Office. Price, 15c.

41. Coal-mine Ventilation. (Trade and Industrial Series, 11.) On sale by Superintendent of Documents, Government Printing Office. Price, 10c.

42. Safety Lamps, including Flame Safety Lamps and Approved Electric Lamps. (Trade and Industrial Series, 12.) On sale by Superintendent of Documents, Government Printing Office. Price, 10c.

43. The Labor Audit. A Method of Industrial Investigation. (Employment Management Series, 8.)

Industry of the Southern States. (Trade 44. The Wage-setting

and Industrial Series, 5.)

31. Training Courses in Safety and Hygiene in the Building Trades. (Trade and Industrial Series, 6.)

35. Use and Preparation of Food. (Home Economics Series, 3.) On sale by Superintendent of Documents, Government Printing Office. Price, 20c.

Process.

Management Series, 5.)

(Employment

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