When a buyer sends a drawing and asks for a mould quote, two questions come first: how much, and how long? Both answers come from the same few factors, so it helps to know what they are.
What drives cost
Part geometry. Undercuts, threads, thin walls and tight tolerances call for slides, lifters, unscrewing units or extra finishing. Each one adds design and machining hours.
Number of cavities. More cavities raise the tool cost but lower the cost per part. The right number depends on the order quantity and the size of the moulding machine.
Mould type. An injection mould, a blow mould, a compression mould and a die casting tool each need different construction and different steel. A hot runner system costs more than a cold runner, but it saves material and cycle time on long runs.
Steel and surface finish. The steel grade is chosen for the number of shots expected and the material being moulded. A polished or textured surface adds finishing time.
What drives lead time
Lead time is the sum of a few stages: design and review, steel procurement, CNC and VMC machining, EDM and fitting, then the mould trial and any correction. The stage that varies most is correction. A clear drawing, a confirmed material and a known machine tonnage shorten the loop because fewer changes arrive after cutting starts.
How to get a faster, firmer quote
- Share a 3D model and a 2D drawing with tolerances marked.
- State the plastic or rubber material and the expected annual quantity.
- Mention the moulding machine you will use for trials.
- Say which surfaces are cosmetic.
With these in hand, a toolmaker can give a realistic estimate instead of a wide range.
At Madhav Plasto Mould in Bakrol GIDC, Ahmedabad, design, machining and trials happen in house, which keeps those stages coordinated. If you have a part in mind, you can request a quote with your drawing and requirements.
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