Nylon CNC Machining

Nylon is a synthetic polymer, specifically a type of polyamide, known for its strength, flexibility, and durability. Due to its properties, CNC-machined nylon parts are often used in gears, bushings, rollers, spacers, and other components where durability and reduced friction are essential. Nylon is relatively easy to machine. It can be milled, turned, and drilled using standard CNC equipment. However, due to its softer nature compared to metals, care must be taken to avoid excessive heat generation which could melt or deform the material.

Nylon 66 (often written as Nylon 6,6 or PA 66) is a specific type of polyamide and is one of the most commonly used nylons. The "66" designation refers to the fact that it is synthesized from hexamethylene diamine and adipic acid, each containing 6 carbon atoms. Nylon 66 is a widely-used engineering thermoplastic due to its balanced combination of strength, temperature resistance, and wear characteristics. CNC machining in nylon 66 results in inexpensive, high-performance parts.

Nylon 66, due to its strength and versatility, can undergo various finishes.

As Machined: CNC machining in nylon 66 will often leave an excellent surface finish. Xometry machinists achieve this with sharp HSS (high-speed steel) cutting tools with appropriate high rake and relief angles.

Bead Blasting: Bead blasting can be used on Nylon 66 to create a uniform, matte appearance. However, care should be taken to ensure that the process doesn't compromise the structural integrity of finer or more detailed features.

Dying: Nylon 66 is receptive to dyeing, especially if the material hasn't been stabilized or filled. The dyeing process can change the color of Nylon 66 parts, often providing a uniform color throughout the material. It's a common method to achieve specific colors, especially when a particular color is needed, and it's not feasible to produce colored Nylon 66 at the source.