RUJOCO uses the same technique that I do (I use atom wax top seal it).
While we are at it,the same stacked style can be done with birch bark (a Scandinavian style) and looks wonderful.I also stack wafers of elephant hide,buffalo hide,and on one occasion - ray skin.Other things that you can do are - add a spacer(s) of burl wood,put a thin piece of metal (brass,aluminum,nickel) every three or four washers,or use different colors of leather.You can also stack neoprene,plastic sheets,and phenolic sheets.