SpoolSignal

Measurement log

Keep the evidence with the spool.

A working record for your own observations. These blank fields are not tests performed by SpoolSignal.

Calculate energy cost

Worksheet updated 21 September 2026. Entries remain on this page and reset when you leave. Download or print to keep them.

Temperature observations

Only enter actual measurements. Identify time and location for every reading.
Elapsed minutesSensor / locationMeasured °CObservation

Enter at least two measured temperatures to summarize the observations. Blank readings remain unknown.

A repeatable measurement protocol

  1. Record the exact filament blend, spool material, dryer model and revision, and the material maker’s instructions. Do not choose a temperature from a generic material name alone.
  2. Record sensor model, stated accuracy, location and room conditions. Use only measurement arrangements permitted by the equipment instructions; do not alter wiring, defeat interlocks or obstruct vents.
  3. Use the same load and measurement locations across comparisons. Record elapsed time from the same starting event and distinguish heater setpoint, chamber display and independent sensor readings.
  4. Keep original readings, energy-meter start and finish values, print settings and labelled before/after samples. Note interrupted and unsuccessful runs too.

A temperature span across different times or locations does not establish chamber uniformity. Chamber humidity and a better-looking print do not directly measure filament moisture content. This template provides a record, not a drying certification.

Technical reference: Prusa: drying filament. Follow the current instructions for the exact material and equipment.

Published by Karl Murphy for SpoolSignal. No physical dryer tests or instrument measurements by SpoolSignal are claimed.