Reproducing vector images for screen printing and stenciling is easy.  But photographs and other images requiring gradients are a bit more complicated and usually a task reserved for photo emulsion.   This Instructable will show you how to produce photographic stencils for use with a silk screen press or spray paint with no need for liquids or light-sensitive processes.  You will need access to a CNC laser cutter or something else capable of etching through card stock.  I used an Epilogue laser cutter available at TechShop. You will need: -A CNC laser cutter or equivalent -Photoshop, or a similar program with filter effects -Stiff card stock or polyester stencil sheet (make sure it’s safe to cut with a laser beam)

Source: Photo Screen Printing Without Emulsion (laser etched)