Engineering tools

Free injection moulding calculators, built by a moulder

Six working tools for design engineers and buyers — the same first-approximation arithmetic our own engineers run before a quotation. No sign-up, no email gate, no tracking; use them freely. When the estimate matters commercially, send the drawing and get the real numbers within 48 hours on working days.

Machine matching

Shot-size calculator — part weight, cavities and runner → total shot weight and the machine-capacity window it needs.
Clamping-force calculator — projected area and material → required tonnage, with the machine on our floor that fits.
Residence-time estimator — how long your material sits in the barrel, and whether it survives.
Gate shear-rate calculator — is your gate burning the material?

Cycle, cost and dimensions

Cycle-time estimator — wall thickness and material → cooling time, total cycle and parts per hour.
Part cost calculator — your material price, cycle and machine rate → honest cost-per-part arithmetic, with tooling amortisation.
Mould shrinkage calculator — target part dimension and material → the tool-steel dimension, with published shrinkage ranges.
Draft angle calculator — angle to offset and back, with minimum-draft guidance.
Aluminium vs steel mould calculator — the tooling break-even point.

Guides

How to qualify an injection moulding supplier in India — the auditor’s checklist we would want run on us.
Injection moulding materials — thermoplastics, blends, alloys and glass-filled compounds, in plain words.
ISBM vs injection moulding — which process your part actually needs.
Temperature & drying chart — melt, mould and drying values for common thermoplastics.