The replica experiment of golden bell excavated from the East Three-Story Pagoda at the Gamunsa temple was carried out in order to know the handiwork technique of ancient granule. The size of 0.3mm granule was attached to the golden bell which was 3.4mm bell body by soldering. When we tried to attach the granule by a modern metalwork, we could know that this technique was hard to make the replica bell. We could prove how to adhere strongly to the golden granule by tension testing. First of all, we made the soldering of the same composition as the golden bell excavated from the Gamunsa temple and then prepared specimens for testing to measure the tension strength. It showed that the broken position was not a soldering part. This result showed how the ancient granule could maintain without a break for a long time.