By Stark Autoplast Industry Editorial Team · 9 October 2026
In this article
Check the requirement reviewUnderstand who owns tooling developmentReview inspection in practical termsCompare total development and supply costConfirm the delivery modelMake the final decision against evidenceCheck the requirement review
A capable discussion starts with your drawing or sample. Ask how the supplier will review mating features, material, tolerances and annual quantity. Be cautious when a quote arrives without questions about an incomplete specification. A precise requirement makes comparisons between suppliers more meaningful.
Understand who owns tooling development
Ask which design and tooling activities are in-house and which depend on external support. Stark has qualified design engineers and an in-house tool room with surface grinder, lathe, M1TR and EDM. Future equipment should be distinguished from currently available equipment. Discuss tooling ownership, maintenance responsibilities and change handling before an order.
Review inspection in practical terms
An instrument list is a useful start, but the agreed inspection method matters more. Ask which dimensions will be checked, what drawing revision will be used and how sample approval will be recorded. Do not assume certification or approval programmes from a marketing statement. Request documentation for any standard that your application requires.
Compare total development and supply cost
Component cost, tool development, sampling, packaging and transport should be reviewed together. Quantities affect production planning, so compare quotes using the same annual and initial demand. Ask how low-volume orders are handled and whether a changed order pattern would affect the commercial proposal.
Confirm the delivery model
Discuss destination, dispatch arrangements and the relationship between the supplier’s manufacturing location and your plant. Stark uses its own fleet for domestic customers within one day of travel time from Faridabad and contracted transport beyond. This is a delivery model, not a guaranteed one-day lead time for all orders.
Make the final decision against evidence
Use the drawing, sample approval, agreed specification and written quotation as your decision record. Review supporting company information and confirm any essential certification directly. A good supplier relationship is built around explicit requirements and realistic commitments rather than unverified ratings or broad promises.
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.