How We Test New Filament Brands at Our Print Farm

Not every filament brand meets our standards. Here is the rigorous testing process we use to evaluate new filament suppliers before committing to production use.

Dimensional Testing

We measure diameter at 20+ points along the spool using digital calipers. Acceptable tolerance is plus or minus 0.02mm. Filaments exceeding this tolerance fail immediately — inconsistent diameter causes inconsistent prints.

Temperature Profiling

Each new filament runs through our standard temperature tower test across two different printer models. We identify optimal temperature, stringing onset temperature, and adhesion failure temperature.

Production Run Testing

Promising filaments run a 50-print production test on our standard calibration figurine. We track: failure rate, surface quality consistency, color accuracy, and dimensional accuracy across all 50 prints.

Long-Term Testing

Sample prints undergo aging tests — UV exposure simulation, temperature cycling, and mechanical stress testing. This validates long-term durability before we commit the filament to customer-facing production.

Go/No-Go Decision

Filament must pass all four stages to be approved for production use. Our pass rate for new suppliers is approximately 30% — most filament brands do not meet our standards. This selectivity is why our print quality is consistent.