What Is Micarta?
Micarta has grown to be a popular choice for knife handles because it can be lightweight, durable, and used in many different applications. The word Micarta comes from the Greek "mica," meaning tiny pieces of rock embedded in the fabric. Let us explore some different types of micarta and their pros and cons for knife handle construction.
Micarta is the brand name for fabrics derived from linen, canvas, paper, fiberglass, carbon fiber, or other thermoplastic fibers. It is an inorganic, microporous material made of linen cloth chemically treated to be waterproof. Rayon (vanillin) or cellulose nitrate can also produce such fabric.
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It was first invented by George Westinghouse, possibly as early as 1910, using phenolic resin developed by Leo Baekeland. These resins were impregnated into paper and cotton fabric and then cured under pressure and high temperature to produce laminates.
Micarta has been used to make guitar picks since 1935 and was first introduced to knife-makers by one Mr. William Risien, who patented his use of this composite material in 1950s America. Originally he called them “Risienite,” but eventually, they have renamed it after the compound’s original name was lost.
Common uses of modern high-pressure laminates are electrical insulators, printed circuit board substrates, and knife handles. The main use for these industrial laminates is insulating power generating and distribution equipment.
Laminates are also used in heavy equipment, aerospace (such as propeller blades); automotive parts; office equipment; tabletops and countertops; electronics; electrical insulation between pressure vessels or piping and their supports; handles such as those of knives, BBQ, and kitchen tools as well as handgun grips; guitar fingerboards, nuts, and bridges; pool cues; and safety gear such as hard hats.
At the advent of dryers, Micarta was used as part of its build to serve as a fire retardant. The knife community started using it to construct handles; the look and feel grew in popularity.
Three Types of Micarta
Paper Micarta – Combine paper micarta and phenolic resin to form a nearly indestructible piece of art. It is a non-absorbent paper made of cellulose fibers, impregnated with phenol-formaldehyde resin applying heat and pressure to create an extremely tough material resistant to corrosion, impact damage, acids, and alkali.
Linen Micarta – Compared to canvas micarta, linen micarta produces a finer finish compared to the gradient finish produced by canvas.
Canvas Micarta – Canvas laminated sheets consist of thermosetting resins blended with canvas cloth. They are made up of layers of canvas that are pressed together under high heat and pressure. The result is a thick, dense material fabricated into various shapes and sizes, commonly seen in knife handles and gun grips. Micarta is a type of material used in making knives due to its easy-to-fabricate nature.
Benefits of Micarta
The benefits of these materials are that they can be manufactured in virtually any color, depending on their formula. It is strong and durable and has become a favorite to use in heavy-duty survival knives.
Micarta is a thermoset plastic that can withstand extremes in heat and cold, resists moisture, and does not become brittle with age. Knife handles made of Micarta are durable and last a long time. Liong Mah Design uses canvas micarta to highlight a classic look and feel on his knives.
This type of knife handle material is very strong and hard, as well as lightweight. It does not easily pick up scratches or dings. However, it has no texturization, which can make it slippery and difficult to use, which is normal when starting out with some handle material. Some knife makers may add etching, bead blasting it or other texturization to improve grip, usually increasing the knife’s price.
Maintenance and Cleaning
Micarta knife handles will stand up to most scratches and impacts, so you do not need to be especially careful. Hot water and soap are usually enough to clean dirty or stained micarta handles.