Support Material Estimator

Estimate support structure volume, weight, and removal time based on overhang angle and part complexity.

Overhang angle threshold (°)

Part complexity (1-5)

Part volume (cm³)

Material density (g/cm³)

Removal difficulty (1-5)

Tab to move between fields

Support volume (%)

Support volume (cm³)

2.4

Support weight (g)2.1

Removal time (min)2.9

Support material cost ($)$0.05

Support:part ratio0.08

How to Use This Calculator

Enter Overhang angle threshold (°), Part complexity (1-5), and Part volume (cm³).
Set Material density (g/cm³) and Removal difficulty (1-5).
Review Support volume (%) and Support volume (cm³).
Use Support weight (g) and Removal time (min) to inform your decision.

How the result changes with Overhang angle threshold (°)

Overhang angle threshold (°): Critical overhang angle. Standard FDM threshold is 45°. Surfaces below this angle need supports.
Part complexity (1-5): 1 = simple box/cylinder, 3 = moderate detail, 5 = organic/complex with many overhangs and bridges.
Part volume (cm³): Total volume of the part from your slicer or CAD software.
Material density (g/cm³): Density of support material. PLA=1.24, ABS=1.04, PETG=1.27 g/cm³.
Removal difficulty (1-5): 1 = soluble/breakaway supports, 3 = standard, 5 = internal/hard-to-reach supports.

Support volume (%): Estimated support volume as percentage of part volume.
Support volume (cm³): Estimated volume of support structures.
Support weight (g): Estimated weight of support material (at ~70% infill density).
Removal time (min): Estimated time to remove supports from the part.
Support material cost ($): Approximate cost of support material at typical PLA pricing.
Support:part ratio: Volume ratio of supports to part. Below 0.2 is efficient, above 0.5 consider redesigning.

Identify Input Parameters
4 parameters
Overhang angle threshold (°) = 45, Part complexity (1-5) = 3, Part volume (cm³) = 30, Material density (g/cm³) = 1.24 = 5 input(s) provided
Calculate Support volume
Support volume = min(80, baseSupportPct * complexityMultiplier)
8 = 8
Calculate Support volume
Support volume = partVolumeCm3 * (supportPct / 100)
2.4 = 2.4
Calculate Support weight
Support weight = supportVolumeCm3 * materialDensity * supportDensityFactor
2.1 = 2.1
Calculate Removal time
Removal time = baseRemovalMin * difficultyMultiplier
2.9 = 2.9