We have developed a novel technique of joining a pair of glass substrates. In the process, molten solder penetrates the gap between the glass substrates while the solder-glass interfaces are being activated by friction. The activation is given by a metal plate, which slides through the gap along the edge of the paired glass substrates and brings in the molten solder by capillary-action. A Ti-doped Sn-Zn eutectic solder showed good hermetic sealing of glass. A eutectic In-Sn solder also yielded good joining, especially at low sealing temperatures.