Solidification Time

Estimate local solidification time with Chvorinov's rule.

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Riser neck suggestion

Neck modulus sits between part and riser so the channel feeds, then freezes first.

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Library legend (all curves):
Snapshots: vs

Chill compensation suggestion

Chill subtracts η·A from cooling area, lowering effective modulus.

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°C
W/m²K
s

Multi-riser collaborative feeding

System modulus must stay ≥ the smallest hot-spot modulus; each riser covers its paired hot-spot.

Riser interference & feeding competition

Feeding zones must not overlap (interference) and each hot-spot covered by exactly one riser.

Layout avoidance diagram

3D riser layout (WebGL)

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Slice the feeding zones along z; the red lens is the overlap area at that height. Animated sweep integrates to the interference volume.

Cumulative interference area ΣA(z) · ΣN(z)

ΣA(z) · ΣV
ΣA(z) & ΣN(z) · dual-axis normalized
Left axis ΣA cumulative (mm³, red); right axis ΣN cumulative (hot-spots, blue). Both normalized 0–100%.

C(z) scheme comparison

A B

Bar = overlap volume each riser is involved in; orange = largest contributor. Σ contributions = 2× total (each pair counted twice).

Note — Faceted STEP (polygon faces) supported; curved surfaces need STL.

min/cm²
Result

Solidification order & feeders

SectionV cm³A cm²

Note — Largest modulus solidifies last; feeder modulus must exceed it for sound feeding.

Note — Hollowing removes the core volume; shell volume = solid − cavity. Modulus uses shell volume.

Note — K and n depend on material and mold; typical for Al in metal mold: K≈0.3–0.7 min/cm², n=2.