GR Pottery Forms are wood drape molds ideal for making dinnerware and serving platters. They are cut and beveled fiberboard which makes them durable and economical. They are easy to use over and over again to create personalized shallow objects. Jeff Rottman has used them for 10 years to create his production line and now is offering them to you. But remember they are wood. They will not last as long if they are left in a wet condition for over a 24 hour period. The timing of making them and removing the pieces from the slab is very similar to plaster.