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Dorchester Center, MA 02124
What Is Annealing? Annealing is how we make metal better. It is a way to heat metal up and let it cool down slowly. This makes the metal softer and less likely to break. [^1] When we anneal metal, we:…
What is Laser Welding? Laser welding is a way to join metals and plastics. It uses a bright light beam. This beam makes a lot of heat. The heat melts the parts you want to join. When they cool, they are stuck together very well. [^1] Laser welding…
What Is 4140 Steel? 4140 steel is a special metal. It is strong and tough. People use it to make many things. It has parts of chrome and moly in it. These make it very good for hard jobs. [^1]…
Fiberglass is all around us! It is in boats, cars, and even in your house. Let’s learn all about this cool stuff! What is Fiberglass? Fiberglass is made of tiny bits of glass. These bits get mixed with sticky stuff called resin.…
What is Copper? Copper is a metal. It has a red-brown color. You can find copper in the ground. People use copper to make lots of things.[^1] Copper has been with us for a very long time! The first copper thing was made a long,…
Stretchy things can break. When you pull on a rubber band too much, it snaps! This is about tensile stress. It helps us know when things might break if we pull too hard. What is Tensile Stress? Tensile stress happens…
Stuff can be made with more than one kind of material. We call this mix a composite material. Let’s see what makes them so cool! What Is a Composite Material? A composite material is like a team. It has two…
What is Polypropylene? Polypropylene is a plastic. It is very big in our world. It is the second-most made plastic on Earth. People make about 80 million tons each year! [^1] We see this plastic all around us. It is…
What is 18/10 Stainless Steel? 18/10 stainless steel is a kind of metal. The numbers “18/10” tell us what is in the metal. This metal is strong and does not rust easily. Many people use it to make things in their kitchens, like pots and…
What is Brass? Brass is a metal that we make from copper and zinc. It is gold in color and very shiny. People have used brass for a very long time. Long ago, people made brass tools and things for…