Take glew, & lay it to steep in faire water, a whole night and then boyle it untill the glew be all dissolved. Experience will be yor best maister to teach you how much water will serve for your glew. if yor size be to thicke it is a good falt, you may make it thinner by adding more water, sometimes you shall need thicke size. Note that you may also boyle glovers shreeds in water; and make good size therewth also.