FIRST EXPERIMENTS--THE KNIFE AND ITS POSSIBILITIES

The older boy, after a search through his treasure chest, selected a

knife with a blade about two and a half inches long.

Incidentally, the smaller boy caught a glimpse of the inside of that

chest and it made his eyes bulge--but that is another story.

[Illustration: Fig. 1. The whittling knife]

"This knife," explained Ralph, "is one I used for over a year in school

and it's the most perfectly shaped tool for whittling that I have

ever seen. Of course knives come in hundreds of shapes for different

purposes, and later on, when you have become skilled in using this one,

we will try some others, but our first motto must be 'one thing at a

time.' A knife with either blade or handle too long or too short is

awkward, but this one seems to fit my hand, and undoubtedly will fit

yours. Try it."

Harry took it and went through the motions of whittling an imaginary

stick.

"Now," said Ralph, "we will go out to the wood pile and see what we can

find. White pine makes the best wood to start on, because it is usually

straight grained, soft, and free from sap; but it is getting scarce and

expensive, so we must be economical, as it is a very easy matter to

waste lots of lumber."

After some searching, they found part of a pine board, about a foot

long and an inch thick. Ralph chopped out a piece with a hatchet and

deftly split it to about an inch and a half wide. His skill was a

revelation to Harry, who saw that even a hatchet could be used with

precision.

"Now," said Ralph, "I want you to cut this piece of rough pine to a

smooth, straight piece, just an inch square."

"Oh, that's easy," replied Harry eagerly. "Just watch me."

"Take care," said Ralph. "I said an inch square; anything less than an

inch will be wrong. Just imagine that this is a problem in arithmetic

and you are trying to find the answer. If you succeed in making it just

an inch square the answer will be correct; anything larger or smaller

than the exact size will be wrong. In the first place, hold your knife

so that it makes a slant or oblique angle with the wood, like this

(Fig. 2)," he said, taking the wood in his left hand and the knife in

his right. "That gives what we call a paring action, and is much easier

(Fig. 3) than the stiff way you were holding it, at right angles with

the stick."

[Illustration: Fig. 2. Correct way to hold the knife]

[Illustration: Fig. 3. Incorrect method of holding knife]

[Illustration: Photograph by Helen W. Cooke. The Boy and His Jack Knife]

"Now remember that the trouble with beginners is that they usually take

off too much material. Make light, easy cuts and try to get one side of

the wood perfectly straight first."

[Illustration: Fig. 4. Testing with the try square]

This was a harder job than Harry had expected, but after much testing

and sighting (Fig. 4) Ralph said it would do for the first attempt.

"Now," he said, "you may consider this first side the foundation of

your house. Make a pencil mark on it near one of the edges, what the

woodworker would call his witness mark. It means that this side or face

is finished and the edge nearest the pencil mark is to be trued up

next."

This proved even a harder job than the first, because after whittling

and testing until he had the second side straight and true, Ralph

tested it with a square and found that the second edge was not

at right angles with the first, or working face. It was finally

straightened, however, to stand the try square test fairly well.

An inch was next marked off at each end on face number one, and a sharp

pencil line drawn from end to end. Harry then whittled this third side

down to the line, and tested again with the try square. It seemed

easier to do now, and the thickness was obtained in the same way. It

looked as if they never would get that piece of pine exactly square,

and even when Ralph said it would do, they measured it with a rule and

found it an eighth of an inch too small each way.

Harry was disgusted. "The answer is wrong after all," he exclaimed,

"but I'll learn to do that if it takes me a month."

"That's the right sporting spirit," said Ralph. "Keep at it till you

get it. It's the hardest thing you will ever have to do with a knife,

and it's unfortunate that you have to tackle it the first thing; but

it's like learning to play the piano, you must learn the notes and

scales and how to use your fingers before you can play a real piece.

Every time you try this, you are gaining skill and the control of your

hands. After a while you will be able to do it easily and think nothing

of it."

Several days later Harry brought in a piece that he had been working on

and Ralph tested it carefully with rule and try square. He gave Harry a

pat on the back. "Good for you, boy; you are coming along splendidly,"

he said. "How many of these have you tried?"

"Twenty," said Harry meekly.

[Illustration: Fig. 5. The notched trophy stick]

"Well, now, I'll show you how the Indians used to record their

exploits. We'll put a notch on this stick for every one you've tried

to make, and you can keep it as a souvenir of your first attempts at

whittling." So with great care they measured off six two-inch spaces

on each edge, carefully drew notches with a pencil and rule, and as

carefully cut each notch to the line. (Fig. 5.)

Harry was delighted with the result.

They then hunted up a small screw eye, found the exact centre of the

end of the stick by drawing two diagonals, fastened the screw eye in

the centre and tied to it a piece of red, white and blue ribbon. A

quarter-inch bevel was made around each end as a finishing touch.

This piece of white pine, with its twenty notches, hangs to-day in

Harry's room, and every once in awhile he counts the notches to make

sure they are all there, and recalls the trial that each one represents.

Harry was so much pleased with his notched trophy stick that he wanted

to begin something else at once, and he was immediately started on a

key rack.

"Too many homes," said Ralph, sagely, "have no definite place to keep

keys. Those that have no tags are always a nuisance. Every key or bunch

of keys should have a tag attached and should be hung on a certain hook

where it can be found without searching. Now we'll make a sketch of a

key rack before doing anything else, to find out just how large a piece

of stick we shall need."

The drawing they produced is shown in Fig. 6 and called for a piece of

wood seven inches long, an inch wide, and half an inch thick. As the

key rack was to be a permanent household article, they decided on gum

wood as more suitable than pine, it being easy to work and having a

satisfactory appearance.

[Illustration: Fig. 6. The various steps in making a key rack]

The different stages in the process of cutting out are shown in Fig.

6. At _a_ is shown the stock squared up with the knife to the extreme

outside dimensions. The ends were then whittled down to the form

shown at _b_ and the blank piece was ready for notching. The notches

were carefully drawn with a sharp hard pencil and cut as shown at _c_.

The ends were bevelled by whittling to the lines, and the inner edges

of the notches in the centre were whittled back to the middle of each

edge. Then the knife work was finished.

Three brass screw hooks were placed in the centre of the large blank

spaces, and two small screw eyes fastened into the upper edge for

hanging the key rack on the wall.

Each stage of the work had been worked out so carefully that the boys

hardly realized what a satisfactory result they were getting. When it

was finally hung in the boys' room, of course some keys must be put on

it, and as they had no tags, the making of some followed as a matter

of course. A search through their small stock of woods disclosed a few

little pieces of holly, the remains of fret saw work, about an eighth

of an inch thick. This proved to be ideal material, and half a dozen

key tags were made of the size and shape shown in Fig. 7. The holes

were made with a brad awl, the tags fastened to the rings by small

pieces of wire, and the names of the keys printed on the different

tags with black drawing ink.

[Illustration: Fig. 7. The key tag]

The boys, from this time on, seemed possessed with a mania for making

articles to be used about the house. One thing to be manufactured

without delay was a winder for their fishing lines.

The form they finally decided on is shown in Fig. 8. Ralph insisted on

the design being carefully drawn on a piece of thin wood, a quarter of

an inch thick. Harry found whittling to curved lines somewhat harder

than notching, but he produced a fairly satisfactory result. Ralph was

a very exacting teacher, always having in mind his own training in

school. He showed Harry how to cut out the curves at the ends without

cutting his thumb (Fig. 9.) and gave him much advice about whittling

away from himself, whenever possible.

[Illustration: Fig. 8. Fish line winder]

When the knife work was finished, Ralph explained that where curved

edges were cut it was allowable to smooth with a piece of fine

sand-paper, although as a rule it was to be avoided.

[Illustration: Fig. 9. Cutting concave curves]

Harry wanted to know why, and Ralph explained that, generally speaking,

sand-paper was the hallmark of a poor workman, one who could not do

good work with his tools. Sand-paper leaves a scratched surface, for

the grit becomes embedded in the wood to a certain extent, and it will

immediately ruin the cutting edge of a sharp tool in case one has to be

used after the sand-papering. "So," he summed up, "keep your sand-paper

and knife as far apart as possible."

About this time the ladies of the household thought that a winder for

worsted would come in very handy, and the boys evolved a new form,

shown in Fig. 10. This was made only an eighth of an inch thick, and

proved so easy of construction that each of the boys made two and

"allowed" that "they ought to satisfy the sewing department for some

time to come."

[Illustration: Fig. 10. The worsted winder]

"Do you know," exclaimed Harry one day, "we could make lots of things

for Christmas and birthday presents!"

"Why, certainly," said Ralph, "and people appreciate things that you

have made yourself much more than things you buy. Anybody can go to the

store and buy ready-made presents, but those you make yourself mean

more."

"In what way?" said Harry.

"Why, they represent much more of your time and labour, and thought;

and, by the way, if we are going to make many Christmas presents, we

must start right away, because we only have a few weeks and you know

how little time we have outside of school hours after getting our

lessons."

The result of this talk was that the little building in the yard which

they called their "shop" became a perfect beehive of industry for

several weeks. With what money they had saved they purchased a supply

of lumber and a few tools the use of which Ralph said he would explain

later. He suggested that Harry begin by making some calendar backs,

as suitable New Year's presents, because they were easy; and the more

complicated articles could be made after Harry had developed a little

more skill with the knife.

[Illustration: Fig. 11. First calendar back]

The drawing he made is shown in Fig. 11. This called for a small

calendar about two inches long, an inch and three quarters high, and a

space this size was drawn on the centre of the calendar back, while the

calendar was glued to the wood.

[Illustration: Fig. 12. Second calendar back]

After two or three of these had been made, Harry decided that they were

too small to suit him, and a new design somewhat larger was worked out

on paper. It was a little more difficult to follow, because the outline

had two reversed curves, but the boys were too busy and interested to

be daunted by a trifle like that. (Fig. 12.)

Ralph suggested simple picture frames, and this brought the new problem

of cutting out an opening for the picture.

The first design they tried is shown in Fig. 13. Ralph had to show

Harry how to make the ellipse with compasses by first constructing two

squares or rectangles touching, and with both diagonal lines in each

square. By taking for a centre the point where the squares touch, as

_a_ and _b_, and using the length of a diagonal line as a radius, two

arcs were drawn at _x_ and _y_. The ellipse was finished by taking _c_

as a centre, and the distance _c d_ as a radius, to draw arc _z_, and

the other end was finished in the same way.

[Illustration: Fig. 13. Picture frame with elliptical opening]

Ralph explained that this was not a perfect ellipse, but would answer

for a small picture frame. The drawing was easy compared to the

question of how to cut out the wood to this curved line.

[Illustration: Fig. 14. Using the coping saw]

One of the new tools was brought out, and Harry was introduced to the

mysteries of the coping saw. (Fig. 14). A thin saw blade was produced

and fastened in one end of the frame, the other end being left free.

A hole was made inside of the ellipse with a brad awl, the free end

of the blade passed through the opening and fastened in the frame of

the saw. Resting the picture frame on the edge of a bench, the ellipse

was sawed out roughly about 1/16 of an inch inside of the drawing.

This remaining sixteenth of an inch was then whittled to the line with

a knife and finished with sand-paper. Harry found some difficulty in

getting this elliptical opening smooth enough to suit him, so they

tried designing for half an hour, and produced a new form (Fig. 15).

[Illustration: Fig. 15. Picture frame in straight lines]

This was easier, as there were no curved lines, and it could be sawed

close to the outside as well as the inside lines, to save time in

whittling. While Harry was finishing this frame, Ralph was busy on a

new design and finally passed over the drawing shown in Fig. 16.

"Do you know there is as much fun in getting up new designs as there is

in making them in wood?" said Ralph.

"Yes, but you have to know how to draw," replied the younger boy.

"Can't you teach me?"

"Yes. I first make a rough sketch of my idea, and then a careful

drawing of its actual size, with the drawing instruments."

[Illustration: Fig. 16. Third picture frame]

"That's the part that I want to learn: how to use the instruments."

A lesson in mechanical drawing followed, and as it is a very important

subject to young woodworkers, it will be given in full in the next

chapter.

Carpentry and Woodwork · 第 15 / 199 题