Build an Electric Stencil

These plans are for an electric stencil anodizer.

You can easily—and safely—put electrochemistry to work "branding" your name on tools, or decorating aluminum sheets.

The stencil pad consists of a metal plate (copper, aluminum—even a scrap of tin can) covered with felt that's saturated with a solution of table salt (or with liquid Sani-Flush). Over this pad you smooth a section of an ordinary mimeograph stencil (available at any office-supply store) which you have typed on a typewriter set for stencil cutting.

Electric Stencil Anodizer