The phrase "usually made" is correct in written English. You can use it to describe any action that is generally done, but not necessarily done every time. For example: "Coffee is usually made with hot water.".
Ministerial appointments are usually made in person.
Too much is usually made of it.
What are cycle helmets usually made of?
Such devices, called thermocouples, are nowadays usually made using semiconductors.
Bicycle frame tubing is usually made of low-carbon steel.
Machinery and motor components are usually made by this process.
Official distress calls are usually made from a ship radio.
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