The Stencils are lasercuttet to special plastic Sheets. The Stencil is made out of transparent aprox. 200my thick foil, wich is solvent resistant and flexible. The foil is NOT self-adhesive, but you’ll use non-permament adhesive-spray if you would like. Use the adhesive-spray When you’ve got a rather concave/convex Underground, then each and every a part of the Stencils sticks to the underground whilst you spray. Test your underground beforehand if it is compatible with your adhesive-spray. The Stencil last a long time if cleaned properly. Clean the Stencils with a soft paintbrush, if you use waterbased colors, use warm Water to clean it right after spraying. When you’ve got solventbased colors, use thinner or brush cleaner. Do not let the Stencil flow too long / over night in solvent, thinner or brush cleaner! – else the Stencil may warp.