I need some info about putting my design on vellum for the company that prints my designs. Do I need a specific kind of printer for this? How much is vellum? How hard is it to print on vellum?My screen printer told me that I can avoid art charges (eats into profits!), if I was able to give them the designs color-separated on velum. I know how to make the color separations on my designs and have each color be a separate layer, but I have no idea about the vellum. Any help at all would be great.