By Stark Autoplast Industry Editorial Team · 9 October 2026
In this article
Start with the requirementReview material and geometryDevelop the toolAgree samples before productionInspect and arrange deliveryPrepare a useful enquiryStart with the requirement
A drawing should describe more than the outside shape. Mating dimensions, tolerances, attachment points and the operating environment help a supplier understand the component. Annual quantity, initial order size and intended delivery location also shape the manufacturing review. If the project starts from a sample, explain what must remain unchanged and what can be improved.
Review material and geometry
Common polymers behave differently. PP is often considered where low weight and flexibility matter, ABS where a rigid finished surface is useful, Nylon where mechanical demands call for a suitable engineering grade, and PC where toughness or optical requirements may be relevant. These are general considerations, not a recommendation for an unreviewed application. The selected grade must suit the drawing and working conditions.
Develop the tool
The mould creates the component geometry. Tool design considers part release, material flow and features that must be formed accurately. Tool complexity depends on the part; a generic development timeline cannot responsibly be promised. Stark Autoplast Industry brings in-house product design and a tool room with a surface grinder, lathe, M1TR and EDM to the review. CNC Wire Cut and VMC are planned additions rather than current claims.
Agree samples before production
Sampling gives buyer and manufacturer a chance to inspect the physical part and review its assembly fit. An approved sample and drawing create a clear reference for production. Changes should be documented so later orders use the same requirement. A visual match alone does not confirm material performance or safety-critical suitability.
Inspect and arrange delivery
Inspection should follow agreed dimensions and requirements. Stark’s profile lists digital vernier calipers, height gauges, micrometers, protractors, radius gauges and pitch gauges. Own transport serves domestic customers within one day of travel time, with contracted transport beyond. Packaging and dispatch arrangements should be agreed before ordering.
Prepare a useful enquiry
Send the drawing or sample photographs, part name, material if known, annual quantity, first-order quantity and delivery city. Explain whether an existing tool is available. If it is not, ask for development and component costs to be reviewed together. A clear enquiry helps the supplier quote the actual requirement rather than an incomplete interpretation.
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.