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A stone being split using a single plug and feathers. Multiple sets of plug and feathers are typically used to split a single, large piece of stone. 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 ...
Traditionally, these posts were manufactured in-place by drilling lines of holes directly into the freshly exposed, soft limestone bed (only about halfway through). Then feathers and wedges were set into the holes and the wedges hammered to split the posts off. [21]
Lifting the stone a small distance from the ground before hoisting is the best way to test a lewis. Any sign of looseness or damage should be corrected by adjusting the lewis hole or packing the lewis with metal shims. To bed a stone using a lewis, the stone is placed on dunnage laid flat with enough clearance for a mortar bed to be placed ...
Splitting mauls and splitting wedges are used to split wood along the grain. A narrow wedge with a relatively long taper, used to finely adjust the distance between objects is called a gib, and is commonly used in machine tool adjustment. The tips of forks and nails are also wedges, as they split and separate the material into which they are ...
A pitching tool may also be used at this early stage; which is a wedge-shaped chisel with a broad, flat edge. The pitching tool is useful for splitting the stone and removing large, unwanted chunks. Those two chisels are used in combination with a masons driving hammer.
The splitting of the granite was done by a method known as feather and tare, which had replaced the former 'wedge and groove' method around 1800; this more reliable method being another reason why the use of granite had become practicable. The new method worked by means of a series of holes was made along a potential line of fracture using a ...
Wood splitting (riving, [1] cleaving) is an ancient technique used in carpentry to make lumber for making wooden objects, some basket weaving, and to make firewood. Unlike wood sawing, the wood is split along the grain using tools such as a hammer and wedges, splitting maul, cleaving axe, side knife, or froe.
A voussoir (/ v u ˈ s w ɑːr /) is a wedge-shaped element, typically a stone, which is used in building an arch or vault. [1] Although each unit in an arch or vault is a voussoir, two units are of distinct functional importance: the keystone and the springer. The keystone is the centre stone or masonry unit at the apex of an arch.
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