Test the Density of Your Sandcarving Film
You may wonder, “Is my film working properly?”
It is important that the black areas can block UV light, but toner that looks dense on vellum may actually be closer to translucent – so how do you know if your film is working properly? A simple test: hold the artwork up to a light source (sunny window, lamp, etc.). If you can see any light through the black areas, the artwork is not dense enough.
For example, hold a piece of black construction paper up to a light source. Light will not bleed through. This is the density your artwork should provide, but note that different types of artwork media may provide better results.
For a general comparison, artwork types are listed in order from highest density and resolution to lowest: Genuine Film, AccuArt Waterproof Inkjet Film, PFX Drafting Vellum, UVII Standard Vellum.
-Michael Sullivan, IKONICS Imaging
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