Useful before tooling.

Practical notes to help prepare your part, material requirements and drawing review.

DFM principle diagram showing deliberate wall transitions and a planned release direction, without dimensions
Principle illustration — not a production drawing

A drawing ready for DFM

Prepare wall transitions, release direction, ribs, bosses and appearance zones before tooling. Use a controlled model, drawing and material specification to agree the decisions that affect the mold.

Read guide
Runner principle comparison: a cold runner solidifies with the shot while a hot runner keeps the delivery path heated; geometry is illustrative
Principle illustration — not a production drawing

Hot runner or cold runner?

Compare solidifying runners and heated delivery paths against the actual part. Review resin compatibility, gate appearance, color changes, maintenance and production requirements before selecting the runner arrangement.

Read guide
Surface concept diagram separating molded smoothness, texture and applied decoration, without asserting a roughness or finish grade
Principle illustration — not a production drawing

Define the surface early

Define visible and touch surfaces before the mold finish is selected. Connect smoothness, texture and decoration with resin, release direction and an appearance reference that can be checked.

Read guide
Sampling review flow: agree criteria, identify trial samples, review dimensions appearance and function, then record the release decision
Principle illustration — not a production drawing

A sample you can approve

Agree acceptance criteria before the trial, identify the samples and record their conditions. Review dimensions, appearance and function separately, then connect corrections and release decisions to controlled revisions.

Read guide
Material selection principle flow from service conditions through candidate resin families to the approved exact grade
Principle illustration — not a production drawing

Choose the resin before the tool

Compare resin families against service conditions, appearance and assembly needs. Confirm the exact supplier grade, reinforcement, color and documentation before releasing the material for tooling or production.

Read guide
Conceptual examples of short shot, sink, warpage and flash, not photographs or measured defect results
Principle illustration — not a production drawing

Read the part, then the process

Describe short shots, sink, warpage and flash before choosing a correction. Review geometry, material, tooling and molding conditions together, then check the result against agreed acceptance criteria.

Read guide

Tell us what you’re making.

Send the part, material and annual volume. We will review the drawing requirements with you.

Process video

Source video supplied by AAA MOULD. External media loads when played.