GR Pottery Forms are wood drape molds ideal for making dinnerware and serving platters. They are cut and beveled fiberboard which make them durable and economical. Sizes available: 3.5" x 5" is the perfect size for soap dishes 4" x 8" is the perfect size for butter dishes 8" x 15" is a perfect size for platters and serving trays 6.5" x 13.5" is a perfect size for platters and serving trays 5" x 12" is the ideal size for trinket dishes, small serving trays Clay should be left on the OG Forms until stiff, leather-hard. Each OG Form has a 45 degree angle edge, and 3/4" depth. Easy to use over and over again giving you a tool to create your personalized shallow objects. 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. Ship really well and can be easily stored in a dry space. No release agent, cleaning or sealing necessary. All Forms are measured in inches.