Author: Sandra Gao Business Manager at Worthy, 20 Years of Experience in Precision Metal Stamping | Worthy Hardware 📧 [email protected] | 🌐 www.worthyhardware.com/ | Published: 2025-10-01 | Last Updated: 2026-11-10

Choosing the wrong stamping process costs you money, delays your schedule, and creates quality problems — and all of that is decided before the first tool is cut.
| Your Part | Start Here |
| Small parts, high volume | Progressive die stamping — typically the lowest piece price at scale |
| Large parts, deep draw, complex 3D geometry | Transfer die stamping |
| Small multi-bend parts (clips, flat springs, terminals) | Evaluate fourslide stamping first — tooling cost is often lower |
| Simple flat parts (washers, flat brackets) | Compound die |
Three things drive the decision: part size and geometry, total volume, and tolerance and secondary operation requirements.
The rest of this article explains how each process works, how costs compare, a break-even calculation you can run yourself, and two real cases from our shop floor.
Worthy (Worthy Hardware) is a precision metal stamping manufacturer based in Dongguan, China. We work B2B only, wholesale only. Every part is made to customer drawings.

The short version: In progressive die stamping, the part stays connected to the metal strip and moves forward station by station. In transfer die stamping, the part is cut into a blank first, then transferred between stations by mechanical fingers.
A metal coil feeds into the die. Each press stroke advances the strip one step. Each station does one thing — pierce, bend, trim, or form. The part stays on the strip until the final station, where it is cut off. One finished part drops out with every stroke.
Fast, consistent, and well-suited for small parts like clips, terminals, contacts, and small brackets.
Engineer's note: The "carrier" that holds parts to the strip as they advance becomes scrap at the end. Carrier design and strip layout directly determine material utilization, which directly affects piece price. This is one of the main reasons progressive die quotes vary between suppliers. Do not just compare final prices — ask about the strip layout and material utilization rate.
https://www.youtube.com/watch?v=10vNgC4LpkQ
The part starts as a separate blank, cut from the strip at the first station. Mechanical fingers pick it up and carry it to each subsequent station. Because the part is free from the strip, the die can work it from multiple directions — making transfer stamping the right choice for larger parts, deep drawn parts, and complex three-dimensional shapes such as housings, cups, and covers.
Worthy transfer die capability: Press capacity up to 200 tons, material thickness up to 15mm, part length up to 500mm.
If your part falls outside this range, or if our review suggests a different process would serve you better, we will tell you directly. We will not push a process just to take the order.
Fourslide uses four slides approaching from four directions to bend and form wire or strip material simultaneously. It is the right tool for small clips, flat springs, hooks, and multi-bend terminals.
Advantages: Flexible forming for complex multi-bend shapes, tooling cost is often lower than progressive dies, less material waste.
Limitations: Not suitable for material thicker than 3mm or for deep drawn parts.
For simple flat parts — washers, flat brackets — that only need an outside profile and holes punched in a single stroke, a compound die is worth considering. It completes blanking and piercing in one station, produces good flatness, and involves a simpler tool structure.
The table below is a starting-point filter based on experience. Final process selection depends on part review.
| Progressive Die | Transfer Die | Fourslide | Compound Die | |
| Part size | Small to medium | Medium to large | Small | Small to medium |
| Part geometry | Flat, bent, shallow formed | Deep drawn, complex 3D | Multi-bend, wire formed, clips | Simple flat parts |
| Production speed | Very fast | Slower | Fast | Medium |
| Tooling cost | Higher | Higher | Usually lower | Lower |
| Piece price at volume | Usually lowest | Medium | Lower | Lower |
| Material utilization | Depends on carrier and strip layout | Often better on large parts | Less waste | Good |
| Not suitable for | Large parts, deep draw | Small parts, high-speed high-volume | Thick material (>3mm), deep draw | Complex forming |
| Suitable volume | Medium to high | Medium to high | Low to high | Low to medium |
No process is best in every situation. The part decides.
For small parts at high volume, progressive die typically delivers the lowest piece price. For large parts, transfer die can be more economical because of better material utilization. For small multi-bend parts, fourslide usually has the lowest tooling cost.
Cost comparison requires looking at two numbers together:
Low tooling cost paired with high piece price can end up more expensive over a year. High tooling cost paired with low piece price is often the better deal at high volume. That is why we always ask about total volume before quoting. A tool that pays for itself at 500,000 parts may never pay for itself at 5,000.
| Factor | How It Affects Price |
| Material utilization | Better strip layout means less scrap, which means lower piece price |
| Production speed | Higher strokes per minute means more parts per hour, which lowers processing cost |
| Tolerance requirements | Tighter tolerances require more precise tooling and tighter process control, which increases cost |
| Secondary operations | Plating, heat treating, and assembly all add cost. Some operations can be done in-die, such as in-die tapping |
Total cost = Tooling cost + (Piece price × Quantity)
Break-even quantity = Tooling cost difference ÷ Piece price difference
The numbers below are for illustration only. They are not Worthy's actual pricing.
| Option A: Progressive Die | Option B: Fourslide | |
| Tooling cost | $20,000 | $8,000 |
| Piece price | $0.10 | $0.16 |
How to use this:
What this formula does not include:
The formula gives you a baseline before you request quotes. Final decisions should be based on a specific part review. Send us your drawings and volume, and we will run this comparison against your actual part.
The problems procurement managers lose the most sleep over are not a few cents difference in piece price. They are:
None of these costs show up on a quotation. They are often larger than the piece price difference between suppliers. The two cases below are both examples of problems caught before the tool was cut.
Customer: Lighting industry, Germany|Part: Metal flat spring|Process: Progressive die stamping Published with customer's permission. Customer identity kept confidential.

The original design had one bend at 5°. Small-angle bends are difficult to hold consistently in progressive stamping for three reasons:
Our engineer did not proceed directly to tooling. Instead, he first discussed the design with the customer's engineering team to confirm whether the 5° angle was a functional requirement for assembly. After review, both teams agreed that adjusting the bend from 5° to 10° would have no effect on assembly fit or part function.
Many cost problems are solvable at the design stage. A small angle adjustment saved more than switching processes or equipment would have.
Drawing review matters more than tooling speed. Changes made after the tool is built cost significantly more.
A good supplier does more than follow drawings. Our 4 engineers review drawings before tooling and raise questions directly with your engineering team. You decide whether to change anything. We do not modify your design without your approval.
Customer: Electronics industry, United States|Part: Aluminum bracket|Process: Stamping and bending Published with customer's permission. Customer identity kept confidential.

Two issues in the design were working against each other:
The combination caused the parts to crack during bending. The tool could not go into production.
Our engineer identified the risk during drawing review and made two recommendations to the customer:
The customer's engineering team reviewed both recommendations and confirmed that 5052-H32 met the strength requirements for the application before approving the changes.
Material selection is not only about strength. For parts that require bending, formability is equally important.
Material, thickness, and bend radius are a system. Change one, and you need to review the other two.
Finding the problem before tooling is far less expensive than finding it after. Discovering a cracking issue after the tool is built means losing both the tooling cost and the lead time
This is the sequence we follow when reviewing a new project. You can use it directly.
Volume determines whether the tooling investment makes sense. Have these numbers ready:
We have no MOQ. We handle prototype quantities through mass production. But the most cost-effective process depends on volume, so give us your numbers and we will recommend accordingly. For small runs of a few hundred pieces, a simpler tool or a different process may make more sense than investing in a full progressive die — we will tell you that directly.
Tighter tolerances cost more. The practical approach:
Worthy tolerance capability: Standard capability ±0.025mm (0.001"). Critical features can reach ±0.01mm after engineering review. Whether that is achievable in production depends on part geometry, material, and process.
Common waste to avoid: Specifying tight tolerances on every dimension is one of the most common ways to add cost without adding value. Before tightening a tolerance, ask whether it actually affects function or assembly.
Stamping is only the first step. Let us know at inquiry stage whether you need:
Secondary operations are much easier to plan and price at the start. Adding them later affects both price and lead time.

Our standard lead times:
| Stage | Standard Lead Time |
| Tooling | Approximately 20 working days |
| Samples | Approximately 5 working days after tooling is complete |
| Mass production | Approximately 2–3 weeks after sample approval |
Complex tools may require longer lead times. We will state this clearly in the quotation. If you have an urgent requirement, let us know at inquiry stage and we will assess whether it can be accommodated.
You will not need to chase us for updates. We communicate proactively at every stage:
Communication channels: Email, phone, WhatsApp, WeChat. Inquiries received on business days are answered within 24 hours.
If a delay is possible: We will notify you as soon as we identify a risk to the schedule — with the reason and a revised expected date. We do not wait until the deadline has passed to tell you.

When pricing is similar, inspection process and defect handling often determine your actual total cost. Ask these three questions before placing an order.
1. How is each stage inspected?
| Stage | Our Process |
| Incoming material | Inspected per ISO 9001 procedures. Material certificates required from suppliers. Dimensions and appearance verified. Materials with special requirements sent to third-party testing |
| First article | Full dimensional inspection against drawing. Mass production does not start until first article is approved |
| In-process | Regular checks of tool wear and dimensional accuracy. Critical dimensions verified by multiple inspectors |
| Outgoing | 100% visual inspection. 100% inspection of critical dimensions. Inspection report included with shipment. Photos and video sent to customer for confirmation before goods are dispatched |
2. What quality documents can you provide?
3. What happens if there is a defect?
Our goal is to catch problems before you receive the goods — not after you have sold them.
One sentence summary for Step 6: Price is negotiable. Inspection process and defect handling should be confirmed in writing before you place the order.

| Step | What to Confirm | What to Prepare |
| 1 | Part size, geometry, material, application | Drawings (PDF + 3D files) |
| 2 | First order quantity, annual volume, lifetime volume | Volume estimates |
| 3 | Which dimensions are truly critical | Critical dimensions marked on drawing |
| 4 | Surface finishing, heat treating, assembly requirements | Secondary operation requirements |
| 5 | Required delivery date, update cadence, delay protocol | Expected delivery date |
| 6 | Inspection reports, quality documents, defect process | Certificate and report requirements |
The more complete your information, the more accurate the quote and the fewer back-and-forth emails.
Required:
Helpful to include:
No complete drawings yet? Send us a sample, a sketch, or a functional description. Our engineers will assess feasibility and help you move forward.
Do you have a minimum order quantity? No. We work from prototype quantities through mass production. The recommended process varies by volume — we will recommend the most cost-effective option based on your numbers.
How long from tooling start to samples? Tooling takes approximately 20 working days. Samples take approximately 5 working days after tooling is complete. Complex tools will have a stated lead time in the quotation. We send progress photos at each stage — you will not need to ask.
What tolerances can you hold? Standard capability is ±0.025mm (0.001"). Critical features can reach ±0.01mm after engineering review. Achievability depends on part geometry, material, and process.
What certifications do you have? ISO 9001 (see certificate image below — issuing body and expiry date visible). RoHS test reports are available for materials. If your industry requires additional certifications, please specify at inquiry stage.
What are your payment terms? Payment is by T/T (bank transfer). Standard terms: tooling deposit paid at order placement, balance paid before shipment of mass production. Specific proportions and terms are confirmed in the quotation.
Which trade terms do you support? EXW and FOB are standard. Other arrangements can be discussed at inquiry stage.
Which regions do you export to? North America, Europe, Japan, Singapore, Australia, New Zealand, Jordan. We have experience handling packaging, customs documentation, and shipping requirements for all of these markets.
Which industries do you serve? Aerospace and defense, automotive, electronics and semiconductors, medical and dental, energy, lighting, robotics, consumer products, industrial equipment, and others.
Will you tell me if there is a problem with my design? Yes — the two cases above are both examples of this. Our engineers review drawings before tooling starts, identify anything that may affect cost, quality, or tool life, and raise it with your team. You decide whether to make changes. We do not modify your design without your approval.
What if there is a quality problem after delivery? We identify the root cause, implement corrective action, and respond with a resolution plan within 5 business days of receiving your report. Repairable defects are repaired at no charge. Non-repairable defects are remanufactured. Where the defect is confirmed as our responsibility, we cover the associated cost and shipping.
Send us your drawings, material, and volume. We will review your part before tooling starts, identify potential risks, and compare process options based on your actual quantities — at no charge.
Sandra Gao Email: [email protected] Website: www.worthyhardware.com Company: Worthy (Worthy Hardware), Dongguan, China Contact: Email, phone, WhatsApp, WeChat Response time: Inquiries received on business days (8:00–18:00 Beijing Time) answered within 24 hours
Author: Sandra Gao, Business Manager, Worthy — 20 years of experience in precision metal stamping LinkedIn: https://www.linkedin.com/in/sandragaocncmachiningparts/
Technical Reviewer: Jason Liu, Lead Engineer, Worthy — 25 years of industry experience, has led the design of over 500 progressive dies, compound dies, and fourslide tooling, with specialization in complex multi-station die design and fourslide processes
Published: 2025-10-01|Last Updated: 2026-11-10
Cases in this article are from real Worthy projects, published with customer permission. All customer identities are kept confidential. Cost figures used in examples are for calculation illustration only and do not represent Worthy's actual pricing.
Worthy Hardware — Precision Metal Stamping Manufacturer, China | ISO 9001:2015 Certified | Serving Global B2B Customers
Primary Markets: North America | Europe | Japan | Singapore | Australia | New Zealand | Middle East