Verified Engineering EngineInteractive 2D Schematic

TPU 85A (Soft Flexible) on Generic MasterSpool / Printed Spool Spool Tare & Length Calculator

Weigh your Generic MasterSpool / Printed Spool spool on a kitchen scale to instantly see remaining meters, feet, and percentage left for TPU 85A (Soft Flexible) (1.18 g/cm³).

Calculated Benchmark Answer

An empty Generic MasterSpool / Printed Spool spool weighs exactly 180g (MasterSpool). A full 1kg net spool of 1.75mm TPU 85A (Soft Flexible) (density 1.18 g/cm³) contains 352.3 meters (1155.8 feet) of filament.

Input Parameters & Presets

1.18 g/cm³

Pre-loads exact volumetric density required to calculate length.

Tare: 180g

Pre-loads empty spool deduction (MasterSpool).

g(41.6 oz)
Min: 180 g83%Max: 1380 g

Weigh your half-used spool directly on any digital kitchen scale.

Preset Values: Quick Weight Presets
Job Electricity Costing$0.14
110W
2D Orthographic Cross-Section
100% REMAINING
TPU 85A (Soft Flexible)352.3m1156 ft
NET: 1000g•DIA: 1.75mm•100% REM
Remaining LengthKEY RESULT
352.3meters
1155.8 ft

100% of 1000g reference spool

Net Filament Weight
1000grams
35.27 oz

Excludes 180g empty tare

Electricity Cost
$0.14USD

8 hrs on Bambu Lab P1S

Material Density
1.18g/cm³

1.75mm diameter profile

Verified Material Reference Spec

Order Fresh 1kg Spool of TPU 85A (Soft Flexible)

High-speed, tangle-free TPU 85A (Soft Flexible) filament with ±0.02mm tolerance for reliable prints.

Check Amazon PriceSearch reference

Kitchen Scale Quick-Lookup: TPU 85A (Soft Flexible) on Generic MasterSpool / Printed Spool

Read your digital kitchen scale directly. Tare deduction of 180g (MasterSpool) is already calculated below:

Spool StatusTotal Scale ReadingNet FilamentRemaining MetersRemaining FeetPercent Left
Low Spool330g150g52.8m173.2 ft15%
Quarter Spool430g250g88.1m289 ft25%
Half Spool680g500g176.2m578.1 ft50%
Three-Quarter Spool930g750g264.2m866.8 ft75%
Full 1kg Spool1180g1000g352.3m1155.8 ft100%

Generic MasterSpool / Printed Spool Spool Tare Weight vs Competitors

Compare empty spool tare weights and resulting filament meter yields for TPU 85A (Soft Flexible) (1.75mm).

Material / SpecificationEmpty TareMaterial1kg YieldFlange Dia
Generic MasterSpool / Printed SpoolACTIVE180gMasterSpool352.3mØ 200mm
Bambu Lab (Reusable Spool)250gPlastic352.3mØ 200mm
eSun (Clear Plastic Spool)245gPlastic352.3mØ 200mm
eSun (Eco Cardboard Spool)135gCardboard352.3mØ 200mm
Polymaker (Panchroma Cardboard)140gCardboard352.3mØ 200mm
Prusament (Honeycomb Plastic + Core)200gPlastic352.3mØ 200mm

Step-by-Step Math: How We Calculate TPU 85A (Soft Flexible) Length

Exact formulas and linear density substitutions for TPU 85A (Soft Flexible) (1.18 g/cm³) on a Generic MasterSpool / Printed Spool spool.

Step 1: Subtract Empty Spool Tare Weight1000.0g net filament
Formula: W_net = W_total - W_tare
Calculation: 1180g - 180g = 1000.0g net filament

Deducting the verified 180g empty tare weight of the Generic MasterSpool / Printed Spool (MasterSpool) spool leaves the exact net plastic mass.

Step 2: Calculate 1.75mm Cross-Sectional Area0.024053 cm²
Formula: A = π × (d / 20)²
Calculation: 3.14159 × (0.0875)² = 0.024053 cm²

Volumetric cross-sectional area in square centimeters for 1.75mm filament.

Step 3: Calculate Printable Length in Meters & Feet352.3m (1155.8ft)
Formula: L = W_net / (ρ × A × 100)
Calculation: 1000g / (1.18 g/cm³ × 0.024053 cm² × 100) = 352.3m (1155.8ft)

Dividing net mass by the linear density of TPU 85A (Soft Flexible) (1.18 g/cm³) yields the printable length.

MetriFab Precision GuaranteeFormulas cross-verified against Blum, Smooth-On, Polymaker, and eSun technical data sheets.
Zero-Lag SSG

Engineering Specifications & Troubleshooting Guide: TPU 85A (Soft Flexible) & Generic MasterSpool / Printed Spool Hardware

Factory-tested parameters, common failure modes, and workbench best practices.

Maker Pro Tips
  • Requires fully constrained direct drive extruder with zero gap between gears and heatbreak.
  • The empty Generic MasterSpool / Printed Spool spool weighs 180g (MasterSpool). Flange outer diameter is 200mm with a 52mm hub bore.
Most Critical Mistake to Avoid

Printing over 30 mm/s causing filament bunching.

Recommended Machine Settings
fan Speed40%-80%
speed15-30 mm/s
enclosure NeededNo
retraction0mm
empty Spool Tare180 grams
spool MaterialMasterSpool
flange Diameter200 mm
hub Diameter52 mm

Frequently Asked Questions: TPU 85A (Soft Flexible) on Generic MasterSpool / Printed Spool

Spool tare weight, density, moisture absorption, and kitchen scale tips.

Q1How much does an empty Generic MasterSpool / Printed Spool spool weigh?
An empty Generic MasterSpool / Printed Spool spool has a factory tare weight of 180 grams (MasterSpool construction). Subtract this tare weight from your scale reading to get the exact net filament weight remaining.
Q2How many meters of filament are in a 1kg spool of TPU 85A (Soft Flexible)?
A full 1,000 gram spool of standard 1.75mm TPU 85A (Soft Flexible) (density 1.18 g/cm³) contains approximately 352.3 meters (1155.8 feet) of printable filament.
Q3Is the Generic MasterSpool / Printed Spool spool compatible with the Bambu AMS?
Generic MasterSpool / Printed Spool spools have a flange diameter of 200mm and width of 60mm. It fits smoothly inside AMS and external drybox rollers.