Rubber Mold Engineering Calculator
Practical web tools for rubber mold designers and mold shop engineers — materials, shrinkage, curing, clamping force and cost estimation.
Tools
Shrinkage & Cavity Size
Calculate mold cavity dimensions from part dimensions and material shrinkage, with the full shrinkage range.
Open → ⏱️Cure (Vulcanization) Time
Estimate vulcanization time from material t90, section thickness and mold temperature.
Open → 📤Demold & Ejection Design
Estimate demolding force, ejector pin area and recommended draft angle from shrinkage, hardness and contact area.
Open → 🧊Cooling & Cycle Time
Estimate cooling time from thickest section and diffusivity, then the full molding cycle time and output rate.
Open → 💉Injection Molding Parameters
Estimate rubber injection fill time, gate size and injection / hold pressures.
Open → 🛠️Clamping Force & Press Tonnage
Compute the required press clamping force and tonnage from projected area and unit pressure.
Open → 🧱Mold & Cavity Layout Size
Estimate plate dimensions and cavity layout from part size, cavity count and spacing.
Open → 🧪Rubber Material Database
Reference table of common rubber materials: hardness, temperature range, shrinkage, t90 and features.
Open → 💰Mold Cost Estimator
Rough estimate of rubber mold manufacturing cost from base, per-cavity and extra costs.
Open →