It would be advisable, then, to adopt the last method generally, resorting to riveting wherever it is impossible to use clips or bands, or where strength is an essential requirement. If a clip is misplaced, it can be replaced with a new one, or it may be moved into the proper position without showing that an error has been made.
Fig. 128.—The Scroll Former.
143. Scroll Former.—[Fig. 128]. This is a very handy tool for producing scrolls in a rapid and uniform manner. It should be a perfectly designed variable spiral. If several are provided, they should be exactly alike, otherwise the scrolls produced with them will be unequal and irregular and will present an inartistic appearance. The former illustrated is made of 1 × 1⁄2-inch soft steel. Draw the end and form the central portion, gradually tapering to about 3⁄16 of an inch thick, but leave it of a uniform width. This end should be slightly beveled from one side to form a protruding edge, over which the small curled end of the material is securely held while the scroll is being bent. A view of the former as it is used to start a scroll is given in [Fig. 129] showing the metal in proper position for forming. The end indicated at a, [Fig. 128], may be bent downward and edgewise to a right angle, as shown, or, if desired, it may be forged square to fit the hardy hole of the anvil, but as this tool is most conveniently used when held in the vise, the method shown at a is better.
Fig. 129.—Starting a Scroll on the Former.
144. Bending or Twisting Fork.—[Fig. 130]. This fork is shown with dimensions suitable for bending material 1⁄8 or 3⁄16 inch in thickness. For thicker material all dimensions should be proportionately increased.
Fig. 130.—Bending or Twisting Fork.
This tool is very serviceable and quite easily made of round tool steel; if such stock is not at hand, octagonal tool steel can be swaged to the desired dimension. If it is made of soft steel, it will meet requirements for a considerable length of time.