New subjects: Wedged pin. Scribing (See C. C. Topic 79). Scraper.

Wood: Oak and poplar.

Preparatory.

A.   Make working drawing.

B.   Make stock list.

C.   Cut all pieces as needed. Make allowance for working. Exercises.

1.   A. Make base of required dimensions.

B.   Bore holes for pins of standards.

C.   With a round file, make the holes a little longer on the under side of the bottom, to allow the wedge to expand the pin.

D.   Plane top and bottom sides of the base.

2.   Make standards, with pins which fit the holes of the base closely.

Do not cut the tops of the standards off. Leave pins a little longer than required. The standards should be long enough to allow several attempts at fitting the shoulder, if necessary.

3.   A. Place the pins of the standards in their holes, and see if the shoulders fit the back perfectly; if they do not, proceed as follows: B.   " Scribing." Push the pin into the hole until the shoulder stops against the back.

C.   Lay a scraper, or piece of wood a little thicker than the greatest opening of the joint, upon the bottom close to the standard.

D.   Make a knife mark around the standard, being guided by the thickness of the piece described in C above. See Fig. 29 A.

E.   With a sharp chisel, cut exactly to these marks, being sure that the wood of the inside of the shoulder is shorter than at the surface. If this is done accurately, a perfect joint will result.

F.   Repeat this process with the other standard.

G. Mark the center of the holes in the standards which are to receive the skeins of the axle. Bore them partially through.

H. Make the tops of the standards of the desired form. I. With the backsaw, make a cut the entire length of the pin of each standard, in the center of the pin, and at right angles with the width of the standard. This is to receive the wedge. J. Plane, scrape, and sandpaper the standards. 4. A. Make the axle of oak. The shoulders and skeins must fit the standards. These must be held in place temporarily while the axle is being fitted.

B. Plane, scrape, and sandpaper.

5.   A. Make sleeve board of the required size and form.

B.   Plane and sandpaper.

C.   Fasten the axle to the sleeve board by the method indicated.

6.   Scrape and sandpaper the top side of the bottom, and round the top corner.

7.   A. Enter the skeins of the axle in the standards, and put the pins of the standards through the holes in the base. B. Fasten the standards permanently by wedges, which will force the pins to fill the elongated holes. Use glue sparingly. A wedge used for this purpose must be placed at right angles with the grain surrounding the hole which contains the pin. Generally it should be of the same kind of wood.

8.   Plane the ends of the pins flush with the underside of the bottom. It is unnecessary to do anything more to this side.

9.   Make the two pieces for the support of poplar.

10.   Remedy defects.

11.   Shellac all but the poplar sleeve board, which will be covered with cloth before it is used.