A spinneret fabrication process that includes the steps of forming a countersink in the bottom of previously formed counterbores of a spinneret plate then punching through the countersinks to form capillaries is improved by supporting the immediate area of each counterbore with a flat-head pin anvil during the forming and punching steps.
A spinneret fabrication process that includes the steps of punching a countersink in the bottom of previously formed counterbores of a spinneret plate, then punching through the countersinks to form capillaries is improved in the countersink and the capillary forming steps by first punching the countersink against an indented head pin anvil and then punching the capillary using a thin dead-soft metal between the spinneret and a back-up plate supported in the immediate area of the countersink by a flat head pin anvil.
