Dynalabs Acetal POM Filament 1.75mm 1kg

Dynalabs Acetal POM Filament 1.75mm — The Self-Lubricating Gear and Bearing Material

If you're printing gears, bearings, bushings, slides, or any part where two surfaces move against each other — Acetal POM (Polyoxymethylene) is the material engineered specifically for that job. POM's defining characteristic is its exceptionally low coefficient of friction combined with outstanding wear resistance. Parts printed in POM are naturally self-lubricating, dimensionally stable, and resist creep under sustained load. At $23.07 per kilogram in 5 colors, it's the go-to material for mechanical and moving parts.

Available in Black, White, Red, Silver Grey, and Steel Grey. The neutral color palette suits industrial and mechanical applications where appearance serves a functional purpose (color-coding, visibility against a machine background).

Key Specifications

Why POM for Gears and Bearings?

In injection molding, POM is the default material for gears, cams, bearings, conveyor components, and zipper mechanisms. It's used in everything from automotive fuel systems to sewing machines. The same properties translate to 3D printing: POM gears mesh smoothly, POM bearings spin with minimal resistance, and POM slides glide without lubrication. No other FDM-printable material comes close to POM's tribological (friction and wear) performance.

Recommended Print Settings

POM is one of the most challenging filaments to print. It requires careful attention to bed adhesion and temperature control. Use a heated bed at 110–130°C with POM-specific adhesive or a PEI sheet treated with ABS juice. Print at 200–210°C nozzle, 25–35mm/s speed. An enclosed printer is mandatory — POM warps aggressively with temperature changes. Print with minimal cooling fan (0–20%). Start with small test parts before committing to complex geometries.

Pro Tips

POM emits formaldehyde gas during printing — always use an enclosed printer with active filtration or print in a well-ventilated space away from occupied areas. For gears, use the concentric infill pattern and 100% infill for maximum tooth strength. Design gear teeth slightly oversized (0.1–0.2mm) because POM parts tend to shrink slightly during cooling. POM-to-POM contact has even lower friction than POM-to-metal — so printing both the gear and its mating bushing in POM produces the smoothest mechanism.

Best Applications

Gears, bearings, bushings, cam followers, conveyor rollers, slide mechanisms, zipper prototypes, medical device moving parts (prototyping), robotic joint components, self-lubricating hinges, linear bearings, and any mechanical application where low friction and high wear resistance are the primary design requirements.

For flexible moving parts, compare with TPU Filament. For impact-tough mechanical parts, see Nylon Filament. Explore all engineering materials in our 3D Printing Filaments guide.