It is a little-known fact that copper screws are the simplest type of motor called a linear actuator. While conventional electric motors produce circular motion, a linear actuator creates motion in a straight line. As the head of the screw is twisted around in a circle, the tip of the screw is driven forward along its axis.
The shaft of a screw has a single helical ridge, called a thread, wrapped around the cylinder. These threads cut a helical groove when driven into a softer material. Some screws are designed to fit inside a complementary helix, the internal thread, such as in a nut. Screws are commonly used to hold things together and to fix them into position.
A little-known use for a copper screw is as a contact screw in a tattoo machine. You can easily make these yourself in your garage or workshop because the metal is very soft. What you need is a length of thick wire, a die with the appropriate internal thread, a set of pliers, fine sandpaper that you get in a hobby shop, a vise and a small bottle of acidic gun bluing solution. The bluing solution, when used with iron metal, protects it from rust and corrosion. Here, it just makes your screw look pretty.
The soft, malleable reddish metal, roughly the same the color as an Irish Setter, has an atomic number of 29 and the chemical symbol, Cu. It readily conducts both heat and electricity. For this reason, it is used for the bottoms of sauce pans and frying pans and as the main constituent of electrical wiring. It is highly ductile, which makes it easy to shape in to whatever you want to make it.
During the Roman era, Cu was mined in Cyprus. This is where it got its original name of cyprium, eventually shortened to cuprum, which is how it ended up with the chemical symbol Cu. It is a trace element in the human body, where it forms part of cytochrome, an important enzyme. Also, whereas humans use the red, iron-containing hemoglobin to carry oxygen to the body and return carbon dioxide out to the lungs, crustaceans and molluscs use a the cupric compound, hemocyanin, which has a blue color.
In people, cuprum is mainly located in the liver, muscles and in bone. Because of its bacteriocidal (germ-killing) action, it is used as a wood preservative and as a fungicide. It is also used as a lining for laboratory incubators that are used for cell and tissue culture.
When would you use a copper screw apart from in a tattoo machine? They are good for use in wood, especially if there is potential for corrosion. This pretty, red metal does not rust as easily as iron or steel. Cu may also be used as a coating for a steel screw. Here, brass, zinc, nickel or cadmium may also be used.
So, copper screws are interesting little motorific devices. The native metal kills germs and looks pretty. They are rather soft, so you need to be careful where you use them. You would not want to use them to hold a commercial airliner together, for instance.
The shaft of a screw has a single helical ridge, called a thread, wrapped around the cylinder. These threads cut a helical groove when driven into a softer material. Some screws are designed to fit inside a complementary helix, the internal thread, such as in a nut. Screws are commonly used to hold things together and to fix them into position.
A little-known use for a copper screw is as a contact screw in a tattoo machine. You can easily make these yourself in your garage or workshop because the metal is very soft. What you need is a length of thick wire, a die with the appropriate internal thread, a set of pliers, fine sandpaper that you get in a hobby shop, a vise and a small bottle of acidic gun bluing solution. The bluing solution, when used with iron metal, protects it from rust and corrosion. Here, it just makes your screw look pretty.
The soft, malleable reddish metal, roughly the same the color as an Irish Setter, has an atomic number of 29 and the chemical symbol, Cu. It readily conducts both heat and electricity. For this reason, it is used for the bottoms of sauce pans and frying pans and as the main constituent of electrical wiring. It is highly ductile, which makes it easy to shape in to whatever you want to make it.
During the Roman era, Cu was mined in Cyprus. This is where it got its original name of cyprium, eventually shortened to cuprum, which is how it ended up with the chemical symbol Cu. It is a trace element in the human body, where it forms part of cytochrome, an important enzyme. Also, whereas humans use the red, iron-containing hemoglobin to carry oxygen to the body and return carbon dioxide out to the lungs, crustaceans and molluscs use a the cupric compound, hemocyanin, which has a blue color.
In people, cuprum is mainly located in the liver, muscles and in bone. Because of its bacteriocidal (germ-killing) action, it is used as a wood preservative and as a fungicide. It is also used as a lining for laboratory incubators that are used for cell and tissue culture.
When would you use a copper screw apart from in a tattoo machine? They are good for use in wood, especially if there is potential for corrosion. This pretty, red metal does not rust as easily as iron or steel. Cu may also be used as a coating for a steel screw. Here, brass, zinc, nickel or cadmium may also be used.
So, copper screws are interesting little motorific devices. The native metal kills germs and looks pretty. They are rather soft, so you need to be careful where you use them. You would not want to use them to hold a commercial airliner together, for instance.
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