The trend hinge jig is a portable template set designed for recessing hinges in wooden doors and frames used on site and in joinery shops to increase productivity with excellent results four apertures for fire door requirements no need for marking out in the conventional way quick and simple to set up as the hinge is used as the pattern clean and accurate recesses are achieved every time suitable for timber based doors and square butt hinges use with a light duty router with 14inch collet long r