You have a part drawing on your desk, a launch date your operations director keeps reminding you about, and a board that wants a tooling number before signing off the project. Every supplier you ring says "it depends." That answer is technically correct and commercially useless.
This guide gives you the ranges, the lead times, and the five real cost drivers — so you can budget, brief your suppliers properly, and stop comparing quotes that aren’t actually comparing the same thing. Sino has been quoting and cutting injection mould tooling for over twenty years from our Shenzhen factory, and the numbers below are calibrated against what UK and EU procurement teams are paying right now.
If you only have 30 seconds: A simple single-cavity tool typically lands between £3,000–£8,000. A medium multi-cavity tool sits in the £15,000–£40,000 band. Large or complex tools — multi-shot, hot-runner, sliders, automotive or medical-grade — run £40,000–£120,000+. Lead times for a production-ready tool run 6–14 weeks depending on complexity, with the cutting itself only being one part of the timeline.
1. The honest answer: what an injection mould tool actually costs
Tool cost is driven mostly by tool size, cavity count, and steel grade. Here are the bands we see most often when quoting against UK and European RFQs in 2026:
| Size band | Typical complexity | Tool cost (£) | Tool cost ($) | Typical lead time |
|---|---|---|---|---|
| Small / simple | Single-cavity, no slides, P20 steel, basic finish | £3,000 – £8,000 | $3,800 – $10,000 | 5 – 7 weeks |
| Medium | 2–8 cavities, 1–2 slides, P20 or 718H, light texture | £15,000 – £40,000 | $19,000 – $50,000 | 7 – 10 weeks |
| Large / complex | Hot runner, 8–32 cavities, multiple slides/lifters, H13 or S136 hardened steel, EDM finish | £40,000 – £120,000+ | $50,000 – $150,000+ | 10 – 14 weeks |
| Specialist | 2K / two-shot, insert moulding, gas-assist, large structural parts | £60,000 – £200,000+ | $75,000 – $250,000+ | 12 – 18 weeks |
These are tool-build costs only — they don’t include the production runs that follow. The figures assume manufacture in a Chinese tool room with British project management; UK-built tools are typically 2–3× higher and Mexican tool rooms sit between the two (more on that below).
The single biggest variable buyers underestimate is process choice. A part that could be produced by gas-assist or a different moulding process can shift the tool budget by 30–50% without changing the part itself. That conversation should happen before the steel is ordered.
2. The five things that drive the price
When a quote feels high, it’s almost always one of these five drivers doing the work. When you’re comparing quotes from different suppliers, line them up against this list — if a supplier is cheaper on the headline and you can’t see which of these they’ve cut, ask.
- Part complexity. Wall thickness variation, undercuts, threads, snap-fits, thin ribs, and tight tolerances all add tool features. Each undercut needing a slide or lifter typically adds £1,500–£4,000 to the tool. Tight tolerance parts (±0.05 mm or finer) need slower cutting and more bench-fitting time.
- Cavity count. A four-cavity tool isn’t 4× the cost of a single-cavity — usually 2.2–2.8× — because the base, gating, and ejection systems scale less than linearly. But going from a single-cavity to a 16-cavity hot runner can still triple the tool budget. The right cavity count is a unit-economics question, not a tooling question (see section 7).
- Tool steel grade. P20 (pre-hardened) is the workhorse for runs up to 500k–1M shots. 718H is a step up. For high-wear materials like glass-filled nylon, or for production runs over a million shots, you need H13 or S136 hardened steel — and that adds 25–40% to the steel cost and significant cutting time because hardened steel is slower to machine and finish.
- Surface finish. SPI A-1 high-polish or VDI textures specified on the part drawing translate directly into hours of polishing, EDM work, or laser texturing. A heavy mould-tech texture can add £2,000–£8,000 on a medium tool. If the cosmetic surface only needs to look "industrial," say so on the drawing.
- Expected production volume. This sets the steel grade, the cavity count, and the runner system. If you tell a tool maker "we’ll do 10k parts a year for five years" they’ll quote a very different tool than if you say "we don’t really know, maybe 200k a year." Pin the volume down before you go to RFQ — the cost of a wrong assumption is much higher than the cost of an honest range.
3. Lead times — what to expect, week by week
"Tooling lead time" is a single number on a Gantt chart, but inside it there are five distinct phases. Knowing where the time goes helps you push the schedule on the right things, not the wrong ones.
A medium-complexity tool from kick-off to T1 sample typically breaks down like this:
- Week 1–2: DFM review and tool design. Your part is reviewed for manufacturability, gate locations are agreed, draft angles checked, and the 3D tool design is built and signed off. Don’t rush this — every day spent here saves a week of trial-and-error later.
- Week 3–7: Tool cutting. Steel is ordered, blocks are roughed, then CNC, EDM, polishing, and bench-fitting in sequence. This is the longest phase and the most visible. It’s also the phase where buyer-side delays (slow approvals, drawing changes) cost the most.
- Week 7–8: First trial — T1 sampling. The tool runs on a moulding machine for the first time. Samples are inspected against the drawing. Almost every tool needs adjustments here.
- Week 9–10: T2 / T3 sampling. Steel is removed (only ever removed, never added — you can always cut more, you can never put it back), gates are tweaked, cooling is balanced. Samples are re-measured.
- Week 10–12: PPAP / first article approval and handover. Final samples, dimensional report, tool documentation, and either tool storage in our factory for production runs or shipment to your nominated moulder.
If a supplier is quoting you 4 weeks for a medium tool, ask what they’re cutting — usually it’s the DFM review and the second sampling round, both of which you’ll pay for in scrap and rework later. If a supplier is quoting 20 weeks for a simple tool, ask what’s queuing in their tool room.
4. China vs UK vs Mexico tooling: cost, lead time, and the trade-offs that aren’t on the quote
This is the comparison every UK and EU procurement team is running in 2026, and the honest answer doesn’t fit on a single line.
China tooling. Cost-efficient — typically 40–60% lower than equivalent UK build, with a deep ecosystem of steel suppliers, hot-runner makers, and EDM specialists clustered around the major manufacturing regions. Lead times are competitive (6–14 weeks for most tools). The risk that buyers worry about — quality drift, communication gaps, no oversight — is real if you go direct to an unmanaged factory. It’s much smaller when you work with a British-managed Chinese factory where the toolmakers and the project managers speak English and the quality system is ISO 9001:2015 audited.
UK tooling. Higher cost (often 2–3× a comparable Chinese build) and shorter shipping, but UK tool rooms have shrunk significantly over the last fifteen years and capacity for medium-to-large tools is genuinely tight. Expect 12–20 week lead times even for simple tools because of queue depth, not cutting speed. Worth it for prototype steel, urgent retools, or programmes where the tool will live next to the moulder.
Mexico tooling. The new entrant in most procurement conversations. Cost sits between China and the UK. Querétaro and Monterrey have a real and growing tool-making base, supported by automotive demand from the US and a USMCA-friendly trade position. For US-bound and Latin-America-bound programmes, Mexico is increasingly the default for a China+1 supply chain strategy — keep the China tooling that’s working, add Mexico for new programmes or for mould repair on tools serving the North American market.
Sino’s own answer to this question: we cut most tools in our Shenzhen factory because the cost-and-quality balance is hard to beat, and we run a mould repair facility in Querétaro for clients who need US-adjacent service on tools that might originally have been built in China. Different tools belong in different places — and the same buyer might use both.
5. Hidden costs buyers underestimate
These are the line items that turn a £25,000 tool into a £38,000 tool somewhere between RFQ and PO. None of them are tricks; they’re just easy to leave off the brief.
- Texture and EDM finishing. A specified VDI or Mould-Tech texture is real money. £2,000–£8,000 for a medium tool, more for cosmetic A-class surfaces. EDM work for tight internal geometry adds hours that don’t show up in CAM time estimates.
- Hot runners. A single-drop hot runner adds roughly £3,000–£6,000 to a tool. An 8-drop valve-gated system can add £15,000–£25,000. They pay for themselves in cycle time and gate-vestige quality on the right programmes — and waste money on the wrong ones.
- Sliders and lifters. Each side action adds £1,500–£4,000 in design, cutting, and fitting. Two undercuts you missed in the original drawing review can add a month to the build.
- Mould flow analysis. £500–£2,000 for a proper Moldflow simulation. Skip it on a simple part; insist on it for thin-wall, large-format, or warpage-sensitive parts. Cheaper than a re-cut.
- Sampling materials. Engineering polymers (PEEK, PSU, glass-filled nylon, medical-grade resins) cost real money to sample. Budget for 25–100 kg of material for T1/T2/T3 trials.
- Shipping, duty, and insurance. A 2-tonne tool shipped from China to the UK runs £800–£2,500 by sea, plus duty (currently 1.7% on tooling into the UK) and insurance. Tools shipped from Mexico to the US are USMCA-friendly and avoid most duty.
- Tool storage and maintenance. Often £20–£60 per month per tool if held at your moulder, plus periodic maintenance every 100k–250k shots. Get this on the contract before the tool ships.
The cleanest way to avoid surprise line items is to have your supplier itemise the quote: tool design, steel, CNC, EDM, polishing, hot runner, sliders, sampling, documentation, packaging, freight. If a quote arrives as a single number, that’s a signal to ask for the breakdown — not to walk away, just to see how the number was built.
6. How to get an apples-to-apples quote
Procurement teams that send the strongest RFQs get back the cleanest quotes. Most quote variation between suppliers isn’t the suppliers being inconsistent — it’s the brief being incomplete and each supplier filling in the gaps differently.
The spec checklist a procurement team should send out:
- 3D STEP file and 2D drawing of the part, with critical dimensions and tolerances called out
- Material specification (resin grade, filler if any, colourant, regulatory grade if relevant — e.g. food-contact, medical, UL)
- Annual volume (year 1, year 2, year 3) and total expected programme life
- Cavity count target, or "supplier to recommend" with a unit-cost target
- Tool steel grade preference, or "supplier to recommend based on volume"
- Surface finish requirement (SPI grade, VDI texture, or "industrial")
- Hot runner / cold runner preference, or "supplier to recommend with cycle-time analysis"
- Where the tool will live (in-supplier for production, or shipped to your moulder — and to which country)
- PPAP / first article requirements
- Target T1 date and target SOP date
- Any cosmetic, regulatory, or branding constraints (logos, datestamps, recyclability marks)
A brief that contains all of this is roughly twice as fast to quote and three times more likely to come back with comparable numbers. It also signals to the supplier that you know what you’re buying — which tends to produce better engineering input on the response.
If you’re scoping a tooling project and the answers to half of these questions are "we don’t know yet," that’s fine — but say so explicitly so the supplier can quote against named assumptions instead of hidden ones.
7. When to invest in a higher-grade tool — and when you shouldn’t
A higher-grade tool isn’t always the right answer. The decision is a unit-economics calculation, not a quality calculation.
Invest in a higher-grade tool when:
- Your annual volume is over 250,000 parts and the programme will run for 3+ years
- You’re moulding glass-filled, abrasive, or corrosive resins
- The part is automotive- or medical-grade — see what sets automotive and medical injection moulding apart for why tool-grade decisions are different in regulated verticals
- Cycle time matters more than tool cost (e.g. high-volume packaging where 0.5 seconds per shot pays for the hot runner in 18 months)
- You’re planning a 2K / two-shot programme where rework on a soft tool is much harder than getting it right in hardened steel from the start
Don’t over-invest when:
- Volume is under 100,000 parts a year and the programme might pivot
- You’re still validating the design and expect drawing changes
- The part is a service or aftermarket component with a finite, declining demand curve
- You’re tooling for a launch where time-to-market matters more than five-year unit cost
There’s also a middle path: a soft (P20) tool with the design built so it can be re-steeled to a harder grade later if volume justifies it. We’ve covered that pattern, plus seven other tactics, in the cost-reduction guide for tooling — useful reading before you commit to a tool grade.
8. How Sino prices tooling
We try to take the "it depends" out of the conversation. Here’s what we do differently:
- Itemised quotes by default. You see tool design, steel, CNC, EDM, polishing, hot runner (if any), sliders, sampling rounds, documentation, and freight as separate lines. No single mystery number.
- British project management, Chinese tool room. Your DFM review, design sign-off, and progress updates are in English with engineers who understand UK and EU specifications. The cutting happens in our 54,000 sq ft Shenzhen factory.
- Factory visits welcomed. We’d rather you come and see the tool being cut. We run regular factory tours and can arrange on-site review at T1 or T2 if your programme warrants it.
- What’s included. Every Sino tooling quote includes DFM review, three sampling rounds, dimensional inspection, tool documentation, and tool storage during production. Optional extras (Moldflow, accelerated build, on-site witness sampling) are quoted as separate lines so you can decide.
- Dual-region option. For US- and Latin America-bound programmes, we can build in Shenzhen and store/repair in Querétaro — or build in Querétaro from the outset for USMCA-qualifying programmes.
Ready to scope your tool? Send us your part drawing, an annual volume estimate, and a target launch date — we’ll come back with a transparent, itemised breakdown within five working days. Get in touch, or read more about our injection moulding capability before you do.
