Definition
A hard, dense composite material made by layering paper, canvas, linen, or fiberglass cloth that has been impregnated with a thermosetting resin (such as phenolic or epoxy), then bonded together under heat and pressure. The result is a strong, lightweight, electrically insulating laminate that machines like a hard plastic and resists heat, moisture, and chemicals.
Plain English
A tough, plastic-like material made by gluing many layers of cloth or paper together with resin and pressing them into a solid sheet or block. It can be cut, drilled, and shaped like wood or metal, but it does not conduct electricity and does not warp easily.
Context Anchor
Seen in aircraft maintenance manuals, parts catalogs, and repair descriptions for nonmetallic parts or electrical insulating pieces.
Derivation
Micarta is a trade name, originally registered by Westinghouse in the early 1900s. It is not descriptive in the usual sense, but the name has become widely used in aviation to refer to this style of resin-impregnated laminate regardless of manufacturer.
Why Pilots Care
Pilots and mechanics encounter Micarta parts during inspections — control cable pulleys, fairleads, and insulating blocks are commonly made from it. Knowing what the material is helps when checking for cracks, wear grooves, or heat damage during a preflight or maintenance check.
Analogy
Micarta is somewhat like very tough plywood, but instead of wood layers, it uses layers of cloth or paper bonded with hardened resin.
Intuition Check
Micarta does not mean any plastic. It means a specific type of hard, layered resin material used where toughness and insulation matter.
Example Sentence 1
The control cable runs over a Micarta pulley mounted on the bulkhead.
Example Sentence 2
In the older Cessna, the electrical bus bars were supported on Micarta strips to prevent shorts.