How to Choose a Progressive Tool Manufacturer in India: 10 Questions to Ask
A progressive die is a long-term investment. A good one produces accurate parts for years with routine maintenance. A poor one costs you rejections, breakdowns and supplier disputes long after the purchase order is closed. The price on the quotation is only part of the decision.
Here are ten questions we suggest every buyer asks a toolmaker, including us.
1. Is the tool designed in-house?
Ask who does the strip layout and the 3D tool design. When design is outsourced, the people who build the tool did not decide how it works, and problems at trial take longer to fix.
2. Will you share the strip layout before building?
The strip layout fixes material utilisation, the number of stations and how the part is held through the tool. It largely decides your piece cost for the life of the part. A good toolmaker shares it for approval before any steel is cut. See what a strip layout is and why it matters.
3. Is wire cut EDM in-house?
Punches, die inserts and stripper plates are usually cut on CNC wire cut EDM. In-house wire cut means better control over cutting clearances and much faster repairs when a punch breaks.
4. Which tool steel and hardness will be used?
The quotation should name the material for cutting elements (for example D2 / HCHCr grade tool steel, or carbide inserts for very long runs) and the hardness after heat treatment. Vague answers here usually show up later as short tool life.
5. Will the tool be tried on a production press?
A tool that has only been tested on a small try-out press may behave differently at production speed. Ask where the trial happens and whether you will receive sample parts with an inspection report.
6. What tolerances and burr height can you hold?
Agree on critical dimensions, flatness and maximum burr height upfront. For electrical parts we work to burr height within about 10% of material thickness. Read how we control burrs.
7. Who maintains the tool after delivery?
Every progressive die needs regrinding and occasional repair. Ask whether the toolmaker offers maintenance and repair, how fast, and whether they keep spare punches for wear parts.
8. Can you also produce the parts?
A toolmaker who also runs a press shop proves the tool under real production conditions. They can also take over production if your own presses are full. This removes the classic "the tool is fine, it's your press" argument.
9. Who owns the tool and the drawings?
Clarify ownership of the tool, the tool drawings and the strip layout. Also clarify where the tool will be stored and who insures it if it stays at the supplier's plant.
10. What are the milestones and lead time?
A realistic schedule has clear milestones: strip layout approval, design approval, manufacturing, trial, sample approval. Be wary of a very short lead time with no milestones.
A quick checklist
- In-house design and strip layout approval
- In-house wire cut EDM
- Named tool steel and hardness
- Trial on a production press, samples with inspection report
- Agreed tolerances and burr limit
- Maintenance support and spare punches
- Clear tool ownership
- Milestone-based schedule
At Atharva Engineers, design, wire cut and tool building happen in our Vasai tool room. Trials and production run on our presses in Manor. Learn more about our progressive tool manufacturing, or send your drawing for a quote.