Acrylic is a type of plastic with a smooth, slick surface. Clean the surface with soap and water and then rubbing alcohol to remove any dirt or oil. A temporary print will stay on the plastic for up to a year---or longer with more preparation. Sand the surface under the area to be printed to ensure the paint will adhere. Apply a sealer over the area painted area to make it last longer.
Draw or trace a copy of the printed design on a piece of paper. Place the paper on a cutting surface such as a quilter's cutting mat. Cut out the design with a craft knife.
Place the cut-out design on the surface of the sticky back stencil. Trace around the inside of the cut-out design with an oil pencil. Repeat the process on the regular stencil sheet.
Cut out the sticky back stencil and the regular stencil print design. Place the paper on a cutting surface such as a quilter's cutting mat. Cut out the design with a craft knife.
Clean the surface of the acrylic sheet with soap and water. Let dry.
Peal off the back of the sticky back stencil and stick it on the acrylic sheet in the desired area. Lightly sand in the cut-out areas on the sticky back stencil.
Remove the sticky back stencil. Wipe off the entire sheet with a soft cloth. Use alcohol and wipe off the sanded area and the area where the sticky back stencil was placed.
Center the regular back stencil over the sanded design. Tape the stencil into place so it does not move.
Place printer's ink on a paper plate. Roll the brayer back and forth in the ink until the brayer roller is completely covered. The ink should be tacky and should not slide when rolled.
Roll the brayer over the stencil openings. Cover the area completely. Re-ink the brayer as needed.
Let the ink dry for 30 minutes to an hour. Drying time depends on the humidity.
Spray a coat of clear gloss acrylic sealer over the stencilled area. Let dry.
Remove the stencil.