Month: February 2018

Patterns in Wood

What determines the wood’s grain is how the tree grew before it was cut. On the bark, it is easy to tell where a knot or burl would be because there is a big circle or bulge on the side of the tree. Any tree that has an elbow joint or branch will have a drastic change in grain, from one direction to another.

There are some pieces of wood that come straight-grained, that is, they do not have very many special attributes. These pieces of wood mostly produce a solid pattern and may primarily be of a single color. Some types/species of wood are more prone to being straight-grained. Some, are more prone to having unusual grain. Although there isn’t a hard and fast rule, there are trends. More often than not, Walnut has a straight-grain pattern. But, when you find a piece with knots or other figures, it becomes special.

Imperfections Make it Perfect

Wood that is named “curly” have properties where its grain swirls often in a back and forth pattern. It has an unusual visual effect which pertains to the way light reflects from the wood. It is iridescent. When a wood with this quality is held in light, there will be parts of the wood that shine and others that do not. This quality runs across the entire piece of wood. Curly Maple is a common wood that has this quality. The wood is of one color, but the light bends, or shines, differently in places.

Some woods have a knot in them. This is a place where a branch had been growing on a tree and then died, creating a dark circle where the dead branch was. This part of the wood is highly unstable because it changes the direction the grain runs, but, if handled properly, can add character and beauty to the wood. There is also a special type of knotting in the grain called Birdseye. A wood with Birdseye has little knots mixed in with the grain which look like a bird’s eye. Birdseye Maple is a great example of this feature.

Most species of wood can produce a burl. In a burl, there is little consistent grain. A wood with this quality can have a variety of imperfections from darker sections of grain to heavy knots. Burls are highly unstable which means that the wood can move on its own easily. The best time to use a burl is when it is dry. Because of how unstable burls are, extreme caution must be taken so that the wood doesn’t split in two.

A species of wood can have multiple grain types. Maple does not have to have just one type of grain pattern. Curly Birdseye Maple has the curly effect along with Birdseye in the grain. Because burls have inconsistent grain, many types of grain can be found in them. A slab of cherry burl can have some thicker discolorations among its grain along with some Birdseye and knotting.

The Heart of the Matter

Wood also has heartwood and sapwood. Sapwood is found on the outer part of the tree, while the heart wood lies in the “heart” (center) of the tree. There is a distinct difference between the two: Sapwood is lighter in color and softer that the heartwood. Pens can be made out of just sapwood, heartwood, or a combination of both to create a drastic color change.

Some of my pens are made out of wood that is laminated. Laminated wood consists of multiple pieces of wood that are arranged in a specific pattern. These blanks must be prepared before being turned. For this type of wood, the pattern in which the wood is laminated can be considered the grain.

If it were not for the vast peculiarities and differences between pieces of wood then all of pens would look the same. From straight-grained wood to the wildest of burls, the imperfections of the wood cause breathtaking impact. Essentially, the more imperfect the wood, the more unique the work of art. The wood itself is art.

 

 

 

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Common Number Patterns

If you have already tested the IQ test, you will be familiar with the type of question posed by a series of numbers, letters, shapes, and symbols and asked: “What will happen next?” In this series of articles, we will focus primarily on the numerical chain because most of them rely on mathematics and address two important questions. First, is this type of “number chain” question a measure of general intelligence, mathematical prowess, or ability to match patterns? Second, is it possible to learn techniques that will improve your performance in this type of numerical string?

The answer to these questions is important because intelligence tests aim to measure innate intelligence, not learning abilities. Increasingly, children and adults are faced with both taking intelligence tests at key points in their lives. Their marks may have a significant impact on their academic or career advancement, such as scholarships, school enrollment, college entry or promotion. It is not surprising that some parents consider it useful to “train” their children on how to take the IQ test in order to improve their performance. However, there is a real risk that a “trained child” who has an artificially oversized intelligence test may find himself in a situation where he is expected to fail because real intelligence does not meet the promise of measured intelligence. If you’re going to encourage your children to interact with “What happens next?” Math games, it is best to approach them as a fun activity that can improve math skills, not their intelligence scores.

Simple arithmetic sequence

In mathematics, a sequence of numbers in which the difference between any two consecutive numbers in the sequence is the same (in mathematical terms, constant) is called arithmetic sequence or arithmetic progression. The simplest of these is progress:

1 2 3 4 5 6

Where the general difference (the difference between two adjacent numbers in the sequence) is 1.

A common variation in arithmetic progression can be either positive or negative integers or fractions so that all the following common patterns in numbers:

9 8 7 6 5 4 3
1 3 5 7 9 11
0.5 1.0 1.5 2.0 2.5
100 90 80 70 60 50

With common differences between -1, 2, 0.5 and 10, respectively.

Filed with “What’s Next?” Number sequence from:
1 2 3 4 5 6 7 _ _

Most children will complete the sequence without any reference to the principles of mathematics because they recognize it as a pattern of numbers used in “counting”, as taught at home or in elementary mathematics. Many children will be able to complete complex arithmetic sequences using the same style matching policy, without calculating or estimating the importance of the common difference in the sequence. For children who do not easily define number patterns, the calculation method is to calculate the difference between adjacent pairs of numbers in the series. If this is the same and appears consistent across the sequence, it is actually a simple arithmetic progression. Other numbers can then be counted in the sequence by adding the value of the common difference to the final number in the sequence. look at more complex arithmetic sequences where mathematics becomes more important than the ability to match patterns.

 

 

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Weld Patterns

Welding can be described as the process of combining more than one metallic substances together using heat. Welding processes are named and categorized depending on their different welding techniques and mechanisms.

Weld patterns are simply the outcome of pattern welding. What exactly is pattern welding? Pattern welding is the art of making sword blades using lots of iron or steel. The patterns come as a result of combining many different metals together. The art of pattern welding is a skill used to furnish sword blades making them more elegant and beautiful pieces.

Weld patterns are different depending on the objectives of the welder. Even though so, the foundation and framework of the products is usually the same. All patterns that have ever been produced on sword blades are usually designed and produced using the same approach. This is done by fussing enough steel with Iron and making sure that the steel is still be visible on the finished product. This fusion is done through welding to of produce beautifully crafted weld patterns on the sword blade.

There are several different patterns that can be crafted on the blades. These are done depending on the client’s taste and set expectations. The most common among them are the whip, circles and weaving.

The Whip
The whip is a technique that involves back and forth motion to create a pattern. This technique is usually good for fillet welds.

Fillet welding is fussing two pieces of metal either perpendicularly or at an angle. When the metals are fussed and form a perpendicular meeting point, the joint is referred to as a Tee joint. On the other hand, when the metals overlap or are welded at angles, the joint is referred to as a lap joint.
This technique works very well on fillet welds of all and any positions.

Circles
A circle is an all rounded shape that is even at every point on the side. There is no more to that, circles are just circles. This technique works best on fillet and grove welds. The fillet welds in this contest have no specifications thus can be either a tee joint fillet weld or a lap joint fillet weld.

A grove weld on the other hand is a design of weld that has been beveled on the edges in an oblique sense. This contributes to amazing and breath-taking patterns.

Weaving Technique
The weaving technique is a pattern welding technique that involves a side to side motion in creating the foundation of the pattern. This technique is most commonly used in grove joints that are in a vertical up position. This vertical up weaving ensures the finished product is a convex weld. A concave weld can also be formed by switching the weaving technique to a vertical down position. Most welders who use this technique usually pause at the sides. This ensures the weld is well spread.

Before deciding to come up with a weld pattern, it is very important that one understands welding in depth and know exactly what should be done for the stretch to come out perfect.

 

 

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