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The pattern of harps is repeated on the face of each stone, when they are laid face to face the patterns mesh in a kind of "scissoring" motion creating the cutting or grinding function of the stones. When in regular use stones need to be dressed periodically, that is, re-cut to keep the cutting surfaces sharp.
Chapter 3 of The Archaeology of Central Philippines, "The Kalanay Cave Site, Masbate, Philippines," describes the site and Solheim's excavations in 1951 and 1953. It describes a small burial cave that contained a large amount of pottery, a few stone and iron tools, a few other artifacts, and some fragmentary skeletal remains.
The stone is first examined to determine the direction of the grain and to identify any potential defects. After the location of the intended split is chosen, a line is scored on the surface of the stone. A number of holes are then cut or drilled into the stone face along the scored line approximately 10 to 20 centimetres (3.9 to 7.9 in) apart.
These were large houses built of stone and wood combining Filipino, Spanish and Chinese style elements. After the Philippines was ceded to the United States as a consequence of the Spanish–American War in 1898, the architecture of the Philippines was influenced by
Polygonal masonry is a technique of stone wall construction. True polygonal masonry is a technique wherein the visible surfaces of the stones are dressed with straight sides or joints, giving the block the appearance of a polygon.
This process removes the material by rotating the facing tool in the counterclockwise direction as the table feeds the work piece across the cutter. Face milling can be achieved with an end mill, but is often done with a face mill, shell mill or a fly cutter. Face milling can be done in both manual machining and CNC machining. To obtain a ...
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Restoration of the church's buttresses, walls, tower, and interior was announced in 2018. [7] Conservation of the church's exteriors was begun by the National Historical Commission of the Philippines in the second quarter of 2019 and completed in June 2020. Work focused on the historic stone masonry walls and buttresses.