Copyright by Keystone View Co., N. Y.
Author at work
Then using a pair of straight metal shears, cut down each side of the seam or joint in the side of the can to within one-half inch of the horizontal line you have marked with the dividers (see [Plate IV, b]).
Bend out the narrow strip containing the seam and cut it off with the shears. This will give you an open slot in the side of the can in which the shears may be easily introduced to cut horizontally around it.
Do not try to cut directly on the line marked around the can with the dividers but begin cutting about half an inch above this line and cut completely around the can until you have cut off the whole top part of it. After you have cut away the larger portion of the metal, the narrow strip remaining above the line may be easily cut away as it curls up out of the way as it is cut by the shears.
The can should be held in the left hand with the open end or top toward you (see [Plate IV, c]). Be sure you hold the can in this manner. With the tin snips held in the right hand, start cutting toward the left hand always when cutting around a can or box. Bend the tin out of the way as you cut. You will find that it is impossible to cut in a straight line or to make a continuous unbroken cut while cutting away a large portion of the can. But, after the larger piece is out of the way, the narrow strip remaining above the line may be easily cut away if you cut toward your left hand and hold the open end of the can toward you. It is impossible to cut a straight line around a cylindrical form with a pair of straight shears unless the shears cut from right to left and that part of the metal which is cut away is nearest the operator.
The beginner will perhaps find it easier to handle the cans if a pair of old thin kid gloves are worn.
If one can afford it, the pair of double cutting shears such as are listed in the supplementary tools on [page 31] are excellent things to have for opening and cutting around cans. These shears have three blades, and one blade cutting between two fixed blades cuts away a narrow strip of tin as the shears are worked along in such a manner that a straight line may be followed around a can at the first cutting. The point of the single blade may be punched into the side of a can and the cut started around the can at any point. If many cans are to be cut down, these double cutting shears will save much time and trouble. However, the straight shears will answer well enough, if the above directions are carefully followed.