Mechanical   Preparation,   Continued Silhouetting or Silhouette an object if you need to reproduce a subject in outline form. This vignetting process partially obscures or completely eliminates background clutter. Vignetting is a process of softening a background with a burned-edge effect. You may use either a photograph or a halftone. If you must preserve the original print, cover it with a clear acetate overlay in tight registration. To silhouette an object, follow this table: Step 1 2 3 Action Clean the surface of the photograph with Fuller's Earth. Carefully outline the desired object with a 1/4-inch width margin of opaque white. Apply thin coats. Do not cake on the opaque white as it tends to chip and flake when dry. Indicate to the printer the removal of all background material outside  of  the  white  border. To brush or airbrush a silhouette, follow this table: Step Action 1 Clean the surface of the photograph with Fuller's Earth. 2 Apply a stencil or mask to protect the areas of the image you wish to  retain. 3 Apply an even coat of pigment over the undesired area. 4 Allow  to  dry. 5 Remove the frisket or mask. 6 Use a small cotton wad to remove excess pigment seepage and to soften the edges of the outline to make it look more natural. Continued  on  next  page 1-44