Insert nails in the holes, apply the glue to both mitered surfaces, place the glued surfaces together, letting Y project about 1/8" beyond X.A convenient way to hold Y in place is in the left hand, palm up, while the left forearm rests upon X.Drive one of the nails home, and continue driving until the parts exactly fit.

Then drive home the other nail.
Now fasten together in the same way the other two members of the picture-frame, and then, one at a time, the third and fourth joint.
This is the method used in picture-frame factories, and when once learned is very simple.
[Illustration: Fig.255.

Picture-Frame-Clamp.

(See also Fig.

254.)] For gluing together at once all the members of a mitered frame, the device shown in Fig.