How to prototype hybrid-circuit patterns and screens at budget prices

Printed circuit taping methods are used to make thick-film master patterns. Usually, the patterns are laid out at ten times normal size and photographically reduced to actual circuit size. The screen patterns are then made using commercially available indirect emulsion material. A home movie light and a photographic print frame process the emulsion instead of a carbon arc and a vacuum frame. These simple techniques result in quick turnaround time and minimum cost to produce development circuits.