THIRD STEP: POURING THE CEMENT. After the glass has been glued and left remaining for several hours (to permit the glue to dry) the retaining bars are placed on the glass, at the proper distance from the cut sections and cement is then poured into and over the glass mosaics until the required thickness of tile is secured. This mixture may be color cement or the neat Portland cement, care being taken to pour it in slowly from the center to avoid formation of bubbles.
FOURTH STEP: FINISHING THE TILE. When the tile has set for several days it may be removed and an incised line made around the edge of each glass mosaic. Place the tile in water to harden for several days. Remove and let dry, then give the entire surface a gasoline wash of gray or other color. A slight polishing of the surface will finish the tile. It will be found that the moisture has softened the glue so that the whole tile releases from the glass surface. The cement should be rubbed off of any of the glass parts if it has encroached until the entire edges of the glass mosaics are visible. This should be done before the tile is placed in the water to harden.
