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Copper is not magnetic. You can place a copper wire or pipe next to a magnet, and nothing will happen. It won’t stick, and it won’t move.
This is because copper doesn’t have the kind of atomic structure that supports magnetism. Its electrons do not line up to create a magnetic field. So, unlike iron or steel, copper shows no attraction to magnets in normal conditions.
Many people confuse rust with corrosion. Rust is a specific type of corrosion that affects iron and steel. Aluminum does not rust because it contains no iron. But that doesn’t mean it stays untouched by its environment.
Nickel doesn’t “rust” in the traditional sense, but it can corrode. Rust, by definition, is the reddish-brown iron oxide that forms when iron reacts with oxygen and water. Since nickel doesn’t contain iron, it doesn’t produce this type of rust.
Zinc doesn’t rust in the same way that iron does. It doesn’t form the flaky, reddish-brown layer we usually associate with rust. Instead, zinc reacts with air and moisture to form a thin surface layer. This layer doesn’t damage the metal—it protects it.
But under certain conditions, zinc can still corrode over time. The way it reacts depends on the environment and the type of zinc coating used.
Pure aluminum has a density of 2.7 grams per cubic centimeter. This value remains nearly the same across all common grades, unless alloys or extreme conditions alter it. The number tells you how much one cubic centimeter of aluminum weighs.
Contour turning is a lathe process in which the cutting tool moves in both the X and Z axes simultaneously. This multi-axis movement lets the tool follow a specific curved or angled path. The goal is to create smooth shapes, like arcs, rounded edges, or sloped profiles, on a rotating workpiece.
High speed machining (HSM) is a cutting method that utilizes significantly faster speeds than standard machining. It involves higher spindle speeds, quicker feed rates, and rapid moves between cuts.
The primary goal is to remove material quickly without generating excessive heat. Fast and light cuts help keep the tools cool. This reduces tool wear and gives a smoother surface on the finished part.
Aluminum heat sinks are a solid option for most cooling tasks. They are lighter than copper and cost less. Copper heat sinks transfer heat better, but they are heavier and more expensive. If you’re looking for a balance of cost, weight, and performance, aluminum is usually the better pick. However, if you require top-level cooling in a confined space, copper is the best option.
Single point threading is a method that uses a cutting tool to create threads on a workpiece. It uses one tool shaped like the thread profile. As the part spins on a lathe, the tool moves along it and cuts the thread. This cutting happens slowly and in steps.
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