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Essential and Specific Properties of Good Quality Paint |
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Saturday, 12 April 2008 09:35 |
A good quality paint must have the following essential and specific properties:- Adhesion - coating must stick to the surface or substrate to bring other properties into work.
- Ease of Application - paint must be easily applied in accordance with the methods as prescribed by the manufacturer. It should go into the substrate time with the desired appearance possessing the necessary specific properties.
- Film Integrity - cured or dried film of paint must have all the film properties as claimed by the manufacturer. There should be no weak spots in the film caused by imperfect film drying or curing.
- Consistent Quality - paint must be consistent in quality such as color, viscosity, application properties and durability from can to can, batch by batch, and shipment by shipment.
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Saturday, 12 April 2008 09:34 |
Paint is commonly referred to as “Surface Coating”. It is defined as “a coating applied to a surface or substrate to decorate, to protect, or to perform some other specialized functions”.
Almost everybody knows the word paint, it uses, color including the brand which are rated as poor, good and durable. There are those who have little knowledge of paint but rated a brand based on how it is advertised. Others on the cost of the paint.
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Saturday, 12 April 2008 09:30 |
Stringer is the inclined plane that support the treads and the risers of a stair. The length of the stringer is determined by the use of the Pythagorean Formula or by actual measurement using a meter rule or tape.
The “Steel Square” is very useful and effective tool in staircase framing. Know its functions and satisfactory result will be obtain. Stringer is classified according to the methods of attaching the risers and the tread:
1. Cut type stringer - is popularly used in most modern and contemporary house designs. 2. Cleated type stringer - is used for a very rough work. 3. Built-up type stringer - is adopted on a wide stairs that requires a center stringer. 4. Rabbet type stringer - is adopted on a fine work and usually made at the mill. The risers and treads are held in the rabbets by wedges that are set in with glue.
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Saturday, 12 April 2008 09:28 |
Building Staircase requires structural carpentry and craftsmanship of cabinet making. It is like constructing an inclined bridge between two points on different floors with uniform well proportional treads and risers that are safe and comfortable to climb and descend. It is important to know and familiarize with the technical terms comprising staircase.
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Saturday, 12 April 2008 09:24 |
The first handmade nails where used in the United States which lasted up to the end of the Colonial Period. In France, light nails for carpenters were made by hand and hammer out of steel wire as early as the days of Napoleon I. In 1851, the wire nail was first introduced by William Herser of New York. 25 years later in 1876, Father Goebel Introduced the manufacture of the wire nails. And at the last part of the 18th century, 23 patents for nail making machine were approved in the United States which was later introduced in England.
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