Measuring Methodology

Each spool of Spectrum filament is produced using continuous diameter measurement with certified Swiss laser gauges. The measurement is performed along two axes with an accuracy of ±0.8 µm, ensuring excellent dimensional stability. Measurement data is automatically stored in our database and assigned to each specific spool. This allows users to check the precise diameter profile of their spool online by entering its unique ID.

Thanks to this method, we collect data such as:

• Standard deviation of diameter – a measure of how much the diameter varies over time. The lower the deviation, the more stable the filament diameter during production. Low values guarantee predictable results in 3D printing.
• Average ovality – the difference between the largest and smallest diameter measured across two perpendicular axes. Ideally, filament should be perfectly round – low ovality indicates high geometric quality of the material.
• Standard deviation of ovality – shows how much the ovality fluctuates along the entire spool length. The lower it is, the more uniform the geometry and the more stable the printing process.

This precise, continuous measurement and data logging not only ensure full traceability of production, but above all allow us to deliver filaments of the quality expected by the most demanding 3D printing users.