you can also make what is referred to as mummy varnish ,dries to a nice natural colour and sheen.take your pine sap disolve in turpintine 3 to 1part sap put in a jar let stand in direct sun light for at least two months,do not shake jar!! after it liquefies add 4 tlbs spoons of raw linseed oil.great water proofer and final finish for arrows ,bows,over sinew and hideglue wrappings,and for glue for flecthing,over sinew and hide glue aplly thin coat set afire for 2 second blow out flame,this process will harden the varnish to a protective shell.....................robustus