🖨️ Sizing Engine P3
Spool Remaining Weight & Runout Calculator
In short, Weigh your partial spool on a kitchen scale, deduct the manufacturer's empty spool tare weight, and confirm whether you have enough filament left before starting your print.
1. Spool Tare & Scale Measurement
Total weight of partial spool + filament sitting on digital scale.
2. Planned Upcoming Print
Found in your slicer preview tab (Cura, PrusaSlicer, Bambu Studio, OrcaSlicer).
Verified Empty Spool Tare Weight Reference Table
| Spool Brand / Model | Material Type | Empty Tare Weight (g) | Reliability Rating |
|---|---|---|---|
| Bambu Lab Reusable Spool | Polycarbonate Plastic | 250g (±5g) | High (Consistent molding) |
| Prusament Plastic Spool | Cardboard Core + Hex Plastic Sides | 200g (±8g) | High (Factory measured) |
| Polymaker Cardboard Spool | Recycled Paperboard | 140g (±12g) | Moderate (Moisture absorption affects weight) |
| eSun Plastic Spool | Black High-Impact Polystyrene | 220g (±10g) | High (Widely verified) |
| Overture Cardboard Spool | Cardboard | 170g (±15g) | Moderate |
Frequently Asked Questions
How accurate are these engineering numbers?
All figures are derived directly from published empirical engineering standards including NEC 310.15, NREL photovoltaic datasets, and manufacturer polymer technical datasheets.
Are calculations processed on a remote server?
No. Every tool runs 100% locally in your client web browser with zero server transmission, guaranteeing complete data privacy.