Silicone tipped fingers help with grip but wear down quickly, i hope that this helps the fingers last longer before it needs replacementa layer of silicone and fiberglass alone is too stiff, hence the need for a silicone 'cushion' underneath.Print the finger and mould, fill the mold with silicone and press the finger in, remove when dry.dab some silicone cauk on one side and place loose fiberglass on top, work the fiberglass in one direction, clockwise or counter clockwise around the finger. Add more silicone when needed.when this layer dries either snip the loose ends off or add a final thin layer of silicone.