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The forming section of a paper machine provides dewatering of the dilute stock stream that is delivered by a head box. The forming section or former, is made up of one or two endless fabric loops. Each fabric has its own set of support rolls, cleaning showers, tension system, and guidance system. The stock screen from the head box is either deposited onto a single fabric or injected between two fabrics, referred to as the inner fabric and the outer fabric. The purpose of the fabric or fabrics is to dewater and support the sheet as it forms and then carry the formed sheet to the next section of the paper machine. A properly designed, constructed, and maintained forming fabric will help the former produce a sheet that meets end product specifications at an acceptable production rate. This module will focus on the design and construction of paper machine forming fabrics and how the design variables influence overall sheet quality.