The present invention provides a method of assembling a filter element (8) with a cup-shaped capsule body (2) using a combined weld-head (70) and former (80), comprising the steps of positioning the filter element (8) at or near a mouth of the cup-shaped capsule body (2), moving the combined weld-head (70) and former (80) so as to contact and drive the filter element (8) into the cup-shaped capsule body (2), wherein, the filter element (8) is deformed by a sprung-loaded former (80) of the combined weld-head (70) and former (80) to form a cup-shaped filter element (56), and using a weld-head (70) of the combined weld-head (70) and former (80) to bond the cup-shaped filter element (56) to the cup-shaped capsule body (2). The present invention further provides a method of making a beverage capsule and a beverage capsule produced using this method.