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Plastic CNC Materials

Nylon 6/6 Sheet (Machined)

Generic / House Brand
⬡ Chemical Resistant
Overview
Polyamide 6/6 engineering plastic block/rod for precision machining. Self-lubricating with low friction coefficient — gears, bearings, and wear pads machined from Nylon 6/6 outperform most other plastics in sliding applications. CRITICAL: Store dry — moisture absorption causes 2% dimensional growth.
Properties
Difficulty
intermediate
Flexibility
rigid
Layer Adhesion
excellent
Enclosure
no
Heated Bed
no
Dry Storage
recommended
Pros
  • Excellent wear and abrasion resistance
  • Low coefficient of friction — self-lubricating
  • High tensile strength (80 MPa)
  • Good fatigue resistance
  • Dampens vibration and noise
  • Can be machined to tight tolerances (when pre-dried)
  • Good chemical resistance to oils, fuels, and bases
Cons
  • CRITICAL: Absorbs 2-3% moisture causing dimensional growth — parts must be machined and measured in dry state
  • Not UV resistant — embrittles outdoors
  • Poor acid resistance
  • Warps during machining if not supported properly
  • Not food safe without certified food-grade grade
  • Expensive for block stock
Best For
  • Precision gears|Plain bearings and bushings|Wear strips and slide rails|Sprockets and pulleys|Cam followers|Rollers and conveyor components|Food-grade certified machined parts (food-grade Nylon only)
Avoid For
  • Outdoor UV exposure|Acidic environments|Wet environments (dimensional change)|Applications requiring zero moisture absorption|Food contact without food-grade certification
Storage
CRITICAL: Store in dry environment with desiccant. Dry at 80°C for 4h before precision machining. Allow to equilibrate at operating humidity before final measurement. Dimensional tolerance must account for equilibrium moisture content.
Brands
McMaster-CarrOnline MetalsCurbell PlasticsProfessional PlasticsNylatron