Quick-fire copper is now available in the form of powder. The powder is already mixed with a binder and all you have to do is add water. The advantages over pre-mixed clay are that you won't have to worry about shelf life, and that you can easily bring the clay to the desired consistency. Since it contains no preservatives the clay is very forgiving, soft, pliable, and sticks well to itself. It mixes quickly, with no mess. Hadar's Clay™ - Quick-fire copper can be fired either without carbon for only half an hour, or in carbon for one hour. It can also be fired with Hadar's Clay™ - Quick-fire Bronze. Before using please download the instruction manual. Shipping For all orders the shipping cost is now calculated automatically. You will need to select the correct shipping option (package size), depending on what you are ordering. When you place your order, please choose one of the following options: USPS Priority Mail, Flat Rate Envelope (books only, up to 2) – choose this option if you are ordering 1 or 2 books and nothing more. USPS Priority Mail, Small Box (jars of clay powder only, up to 8) – choose this option if you are ordering up to 8 jars of clay powder and nothing more. USPS Priority Mail, Medium Box (books and clay powder, 20 lb max) – choose this option (a) if you are ordering 3 books or more, or (b) if you are ordering 9 jars of clay powder or more, or (c) if you are ordering a combination of books and clay powder. Instruction Manual CO07$20.00 © Copyright 2010 Hadar Jacobson - All Rights Reserved Hadar's Clay™ is a trademark of Hadar Jacobson. The terms "bronze clay" and "copper clay" are used generically and do not denote any particular product or brand.