During the gluing stage, the base of the Tefillin is now glued together as depicted in the picture on the right. We use special glue which is made by cooking leftover pieces of ox hide. Thus the housings and the glue originate from the same material and are referred to as “the same kind”.
Strict care is taken to ensure that the tops of the housing are not glued together and remain separated all the way down to the base. The “Batim” or housings are the dried under pressure in a screw press for a number of days.