The Grid will make a perfect 1″ grid for symmetry in your designs. I know my designs re on the money now. The Grid is made of a flexible polycarbonate that resists lacquer thinner so clean – up is quick and easy.There are no limitations on the size grid you can make. The simplicity of the design and use of the tool have people like John Hannukaine, Steve Cox, Brian Dalling, and Don Boeke using words like”amazing”. The grid on the left side did the grid on the fight in about 15 seconds.