Injection molding calculators for real shop questions

1. 01
   Mold opening and clamp force

   Use CAD projection normal to mold opening, including runner projection, plus a justified cavity-pressure basis.

   Next calculationProjected Area → Clamp Tonnage; separately verify tie bars, platens, mold height, and ejection.

2. 02
   Complete shot and injection unit

   Build mass from cavities, cold runner or sprue, and cushion; identify the resin and machine rating basis.

   Next calculationShot Size → Shot Volume; then use the machine data sheet rather than a universal PS rating.

3. 03
   Cooling and total cycle

   Use the controlling wall, grade-relevant thermal inputs, ejection criterion, motion, and automation within one cycle boundary.

   Next calculationCooling Time informs Cycle Time; validate with ejection, dimensional, and surface-quality evidence.

4. 04
   Good output and commercial exposure

   Use credible cycle, cavities, availability, rejects, material allocation, and demand period on the same production definition.

   Next calculationParts Per Hour, Cavity Count, Scrap Rate, and cost tools reveal different constraints.

The linked guides explain the pressure, cooling, shot-capacity, and cost assumptions that need a source or trial check.