Abstract: An adapter is disclosed for converting a portable jigsaw into a hand-held instrument for removing wallpaper. The adapter includes an extension clamped to the table of the jigsaw that both provides structural strength as well as a reciprocating blade mount. The extension is preferably formed of plastic. In an alternative embodiment, instead of the reciprocating blade, a sander is mounted to the reciprocating portion of the extension.

Abstract: An adapter is disclosed for converting a portable jigsaw into a hand-held instrument for removing wallpaper. The adapter includes an extension clamped to the table of the jigsaw that both provides structural strength as well as a reciprocating blade mount. The extension is preferably formed of plastic.

Abstract: A photograph artwork containing a one to one scale exact image of the circuit pattern to appear on a fabricated printed-wiring board is modified in a predetermined manner. This has the effect of equalizing the amount of metallic conductive circuits on a double sided printed wiring board or panel. The resulting board or panel is plated uniformly on both sides when passed through the electrodeposition cycle of a fabrication process.

Abstract: A computer aided design (CAD) system is operative to generate an output containing only the additions and deletions to an existing master artwork. The CAD output is in turn applied to photoplotter equipment which produces a "delete" artwork containing line representations of only the etch/wires to be deleted from the original master artwork and an "add" artwork containing line representations of ony the etch/wires to be added to the same original master artwork. These two artworks are photographically combined with the original master artwork in a predetermined manner to produce a new PWB artwork which incorporates the added and deleted wire changes.