after you glue it up then you have to compress it so it gets hard wet it like you would to wet form then compress it and let it dry before shaping and finishing. I sand it then burnish it with a polishing wheel. after that you put any sealer you like
i make mine in sections then soak them and compress them in a vice between two pieces of wood.
cut your slots to fit your tang use your tang to glue up your pieces in line to make two or three sections, take your glued and dried sections off your tang and then wet and compress them after they are dry then you can clean out the tang slots slide the sections on(glue them now) and the last step of putting on the hilt should compress those seams , shape, sand and burnish and seal.