Shapes like a star, heart, diamond, circle, triangle can be made quick and consistently using a stencil. Want to make an American Flag? A Star Stencil can make all 50. Need to brighten a playground. Add 3 foot Triangles, Octagons, Ovals, Hearts and paint them a rainbow of colors. Need a perfect circle. Use a Laser-cut circle stencil any size from 2 inch to 4 feet.