Table of Contents
What is wedging explain?
1 : to fasten or tighten by driving in a wedge. 2a : to force or press (something) into a narrow space : cram. b : to force (one’s way) into or through. 3 : to separate or force apart with or as if with a wedge. intransitive verb.
What is wedging of stone?
The Wedge Method of Quarrying: It is consists of digging a few holes at carefully selected places on the rock. These holes are dug either manually using chisels and hammers by the skilled workers. Or, in major quarrying, these holes may be drilled by special machines called hammer drills.
What is wedging in art?
A technique in which clay is thoroughly kneaded before use in sculpture or pottery, to make it malleable and remove air pockets.
What is wedging in clay preparation?
Wedging clay definition: the process of kneading the clay with the hands to remove air bubbles and ensure a homogenous mass.
What is called a wedge?
A wedge is a triangular shaped tool, and is a portable inclined plane, and one of the six simple machines. It can be used to separate two objects or portions of an object, lift up an object, or hold an object in place. The mechanical advantage of a wedge is given by the ratio of the length of its slope to its width.
What is wedging and why is it done?
Wedging prepares the clay for optimal use. Wedging makes the clay more pliable, ensures a uniform consistency, and removes air pockets as well as small hard spots in the clay before you use or reuse the clay for a project.
What is wedging of the vertebrae?
The vertebral wedging angle (ɑ) is the angle between the upper endplate and lower endplate of the vertebra. The intervertebral disc wedge (β) is defined as the angular difference between the inferior endplate of the upper vertebra and superior endplate of the lower vertebra.
What is heating in quarrying?
Heating- In this method, the top surface of the rock is heated. Due to unequal expansion, the upper layer of the rock separates out and is indicated by a dull bursting noise. The detached blocks are then removed. This method is useful when the rock formation consists of horizontal layers at shallow depth.
What does wedging mean in medical terms?
1. Suffocation that results from compression of the chest between two firm surfaces. It is an occasional cause of sudden infant death syndrome, e.g., when an infant becomes lodged between a sleeping partner and a wall or mattress.
Why is kneading clay important?
Before using clay for a project, you need to prepare it by kneading it, also known as wedging. Kneading clay properly will make it easier to work with and will eliminate air bubbles. Upper body strength and strong hands are helpful when kneading clay. Use these tips to knead clay.
When should you wedge clay?
You should wedge at least 30 times when it’s fresh out of the bag. When it’s recycled clay, you will need to wedge it at least 100 times if not more depending on the condition of your clay.
What is glazing pottery?
What is glazing in pottery? Glazes are a liquid suspension of finely ground minerals that are applied onto the surface of bisque-fired ceramic ware by brushing, pouring, or dipping.
What is the use of potter’s wheel?
In pottery, a potter’s wheel is a machine used in the shaping (known as throwing) of round ceramic ware. The wheel may also be used during the process of trimming the excess body from dried ware, and for applying incised decoration or rings of colour.
What is wedge example?
The wedge is used to separate an object apart. Some examples of wedges that are used for separating might be a shovel, a knife, an axe, a pick axe, a saw, a needle, scissors, or an ice pick. But wedges can also hold things together as in the case of a staple, push pins, tack, nail, doorstop, or a shim.
What is the use of wedges?
Wedge, in mechanics, device that tapers to a thin edge, usually made of metal or wood, and used for splitting, lifting, or tightening, as to secure a hammer head onto its handle.
What are wedges made of?
A wedge is a simple machine that almost looks like a ramp or an inclined plane. It is actually made up of two inclined planes joined together. It can be made of wood, metal, stone, or plastic. It is thick on one end and usually thins out to a sharp edge on the other end.
What is grog in pottery?
Grog, also known as firesand and chamotte, is a raw material for making ceramics. It has a high percentage of silica and alumina. It is normally available as a powder or chippings, and is an important ingredient in Coade stone.
What are 5 stages of clay?
Terms in this set (5) slip. a mixture of clay and water, the consistency of pudding. wet/plastic clay. new clay from the bag, very workable. leather hard. the clay has lost most moisture, but you can still carve into it. bone dry or greenware. totally dry clay, all moisture is gone, ready to fire. bisque.
What is wedging in the thoracic spine?
Introduction. A wedge fracture is a vertebral compression fracture occurring anteriorly or laterally. Viewed, the affected vertebra resembles a wedge. These fractures are more commonly found in the thoracic spine, which is rather rigid displaying only a few degrees of flexion and extension.
What causes spinal wedging?
When an external force is applied to the spine, such as from a fall or carrying of a sudden heavy weight, the forces may exceed the ability of the bone within the vertebral body to support the load. This may cause the front part of the vertebral body to crush forming a wedge shape.
What does wedging mean on an xray?
It includes vertebrae in the chest and upper abdomen. An x-ray, MRI or CT scan report might describe “anterior wedging of the mid-thoracic vertebral body.” This means there is a compressed appearance of the front part of the body of the spinal bone in the middle of the spine.
