Clay is a natural product from the earth formed from rock weathering. It is usually coloured by impurities especially iron oxide. Clay becomes wet when mixed with water. It can be moulded into different shapes in its wet form. Clay can be processed to obtain other materials such as ceramics and glass. The clay must be prepared and any trace of sand, stones, metal scraps, plant materials, and all other impurities must be removes before using it for ceramics production. Ceramics and glass products are commonly used in homes and offices. <figure class="wp-block-image size-full is-resized"><img src="https://www.primacyebooks.com/wp-content/uploads/2022/03/pinch.jpg" alt="" class="wp-image-12617" width="203" height="135"/><figcaption>Pinch Method</figcaption></figure> <div class="sign-up-notice-after-excerpt-two" style="background-color:powderblue;"> You are viewing an excerpt of this lesson. Subscribing to the subject will give you access to the following: <ul> <li>The complete lesson note and evaluation questions for this topic</li> <li>The complete lessons for the subject and class (First Term, Second Term & Third Term)</li> <li>Media-rich, interactive and gamified content</li> <li>End-of-lesson objective questions with detailed explanations to force mastery of content</li> <li>Simulated termly preparatory exams</li> <li>Discussion boards on all lessons and subjects</li> <li>Guaranteed learning</li> <li>Win great prizes for topping the <a href="https://www.primacyebooks.com">Primacy Ebooks</a></li> </ul> </div> <div class="sensei-message info"></div>