The manufacture of three-dimensional work pieces places special demands on the sewing technology. The class 8967 fully meets these demands. The narrow arm allows easy handling of the work pieces. Even at the high speed of the 8967 the bottom feed, needle feed and alternating top feed with large top feed stroke guarantee displacement-free seams of high quality and a material-protecting working method. A multitude of sewing equipment and attachments ensures easy assembly, binding and welting operations.