By Stark Autoplast Industry Editorial Team · 9 October 2026
In this article
Define the purpose of the sampleMeasure and documentCreate the product designConfirm material and manufacturing requirementsDevelop tooling and assess samplesShare a complete starting packageDefine the purpose of the sample
Tell the design team where the part fits, what it contacts and whether the sample is new or worn. A damaged or aged part may no longer represent the intended dimensions. Mark the features that are critical to assembly, and identify any requested improvements separately from the original geometry.
Measure and document
Dimensional measurements help reconstruct the component. Digital vernier, height gauge and micrometer measurements can support a review of accessible features. Hidden interfaces or complex shapes may need further design investigation. Reverse engineering is not simply copying an external silhouette; it is establishing a useful geometric reference.
Create the product design
Stark Autoplast Industry has in-house reverse-engineering expertise for product and tooling design. Its engineers have working experience in SolidWorks, Pro-E and AutoCAD. A proposed design should be reviewed against the mating assembly so assumptions about fit and function are resolved before tool development.
Confirm material and manufacturing requirements
The original material cannot always be identified from appearance. Colour and feel are not enough to establish a polymer grade. The customer should provide known specifications or agree a suitable review process. Production quantity, finish and geometry affect the tooling approach, so discuss them while the product design is still being reviewed.
Develop tooling and assess samples
Tool development follows the agreed geometry and material. Initial samples allow dimensional review and assembly trials. Record any changes and approval decisions in writing. Tooling and sampling times depend on complexity; request a project-specific schedule instead of relying on an arbitrary industry average.
Share a complete starting package
Provide clear photographs from several angles, the physical sample if possible, mating-part information and anticipated annual demand. State whether the goal is direct replacement, an improved design or a related new component. The more explicit the goal, the more useful the design and quotation review.
What is injection moulding?
Injection moulding forms a component by introducing a suitable heated polymer into a mould cavity. The material cools and takes the cavity shape. Tool design, material and processing requirements depend on the part.
Can plastic parts be reverse engineered?
Yes. An existing sample can be measured and used to develop product and tooling designs. The intended fit, function and material should be confirmed before a production tool is made.
How long does tool development take?
Timing depends on part geometry, complexity, tooling requirements and approval stages. Send your drawing or sample for a project-specific review rather than relying on a generic timeline.
What is the difference between a prototype and a production tool?
A prototype tool generally supports development and initial samples. A production tool is designed around the agreed repeat-production requirements. Suitability depends on geometry, material, quantity and service expectations.
What materials can I specify?
You can indicate PP, ABS, PA/Nylon, PC, HDPE, PVC, Rubber/TPE or another material in your enquiry. Suitability and availability are reviewed; the final specification follows your drawing or approved sample.