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Tooling · outsoles & midsoles
Custom Sole & Mould Development
A shoe stands on its sole — and a sole is only yours if the tooling is yours. DOING (DOING INT'L CORP. LIMITED) develops the sole structure in 3D, cuts the moulds for it — aluminium or steel, depending on the sole and the run, and moulds the finished units in Quanzhou and at partner tooling bases elsewhere in China.
Can a footwear factory make a sole mould to my own design?
Yes. DOING SHOES develops custom outsole and midsole tooling in China — based in Quanzhou, and at partner tooling bases elsewhere in the country. 3D sole structure design, mould cutting in aluminium or steel, then moulded units in EVA, rubber, TPR or combined constructions. A new sole mould takes about 25–36 days end to end. Tooling stays dedicated to your brand under NDA.
Watch a sole mould being made
Real footage from our tooling workshop — not stock video.
From 3D structure to cut steel
How long a sole mould takes
Real timings from our tooling shop. Mould making is the long pole — the design steps before it are quick.
1 · 3D sole drawing
1–3 days
The sole structure is drawn in 3D from your design or reference sample.
2 · 3D wooden master
3–5 days
A physical master model is cut from the 3D file so the shape can be checked in the hand.
3 · Mould making
20–25 days
The mould is cut from the approved master — aluminium or steel — the longest step by far.
4 · Mould trial
1–3 days
First units are moulded and checked, then the tooling is corrected if needed.
Total: about 25–36 days from signed-off sole design to a mould that runs. Upper development and sampling run in parallel, so a new style does not wait on tooling alone.
Sole units from our own tooling
EVA, rubber and combined constructions — four sole units, each shown from the side and from below — different stacks, tread patterns and flex layouts, all moulded from tooling we developed.
Which material the sole gets tooled in
The mould is cut for a specific material and process — you cannot tool once and switch later without re-cutting. So the material decision has to be made before the steel is touched, not after the first trial. The four trade-offs buyers ask about most:
- PU vs EVA — density, compression set and how the sole ages in wear
- Phylon vs EVA — the midsole choice behind most weight and rebound decisions
- TPR vs rubber — cost against abrasion and grip
- TPU vs rubber — outsoles, plates and overlays
Combined constructions are common: a moulded EVA or Phylon midsole with a rubber outsole bonded to it needs tooling for both parts plus a bonding step, so it costs more to develop than a single injected unit — and lasts longer at the wear points. Background on the assembly side in outsole construction methods.
What actually drives tooling cost
There is no single price for "a mould", because tooling is quoted per size — your budget is the per-size cost multiplied by your size run. What moves that per-size number:
- Size run — the largest single factor. A full EU 36–46 run is roughly twice the tooling of a narrow range
- Aluminium or steel — aluminium is cheaper and faster; steel holds tolerance over long production runs
- Number of parts — a bonded midsole-plus-outsole build needs more than one tool
- Sole complexity — undercuts, deep lugs, sidewall detail and inserts all add machining
- Revisions after cutting — the expensive kind. Changes made on the 3D file are cheap; changes made on cut steel are not
Send the design and we will quote the real number rather than a range — what a shoe mould costs explains the arithmetic behind it.
Where sole development goes wrong
- The sole is signed off late. Mould making is the long pole at 20–25 days; everything upstream is fast. A sole shape agreed two weeks late is a shoe two weeks late
- The sole is designed without the last. The sole has to match the last it will be built on — bottom curve, heel seat and toe spring. A sole developed in isolation fits nothing
- Tread is chosen for looks alone. Lug depth and edge geometry decide grip and wear; a pattern that photographs well can still fail abrasion
- No trial before production. The mould trial exists to catch flash, short shots and density variation while they are still cheap to fix
Tooling at a glance
| Start from | Sketch · 3D file · reference sole |
|---|---|
| Mould material | Aluminium or steel |
| Sole materials | EVA · Phylon · rubber · TPR · TPU · PU · combined |
| Lead time | 25–36 days end to end |
| Quoted | Per size — budget = per-size cost × size run |
| Ownership | Dedicated to your brand, not reused for other buyers |
| Validation | Mould trial, then abrasion, flex and adhesion testing |
Tooling is one stage of the wider footwear development process; the finished units can also be supplied on their own as semi-finished components.
Validating the tooling before it goes to production
A first shot proves the mould fills; it does not prove the sole survives. Before production approval the unit is fitted against the actual last and upper, then tested for the things that fail in the field — abrasion at the tread, flexing at the forefoot, and bond strength where midsole meets outsole. Flex is the one that bites latest and hardest: see how flex testing stops soles cracking, and the standards each test maps to.
One worked example: a Middle East retail chain came to us with an EVA clog brief and no existing tooling. The mould was developed in-house and the first order shipped on time — see the EVA clog development case study.
Sole & mould development — buyer questions
Do you make your own outsole moulds?
Yes. We develop the sole structure in 3D, then cut the moulds for it in aluminium or steel. Because the tooling is made for your design, the sole shape, tread and stack height are yours — not a catalogue sole shared with other buyers.
How long does a new sole mould take?
About 25–36 days end to end: 3D sole drawing 1–3 days, 3D wooden master 3–5 days, mould making 20–25 days, then mould trial 1–3 days. Mould making is the long pole; the design steps before it are fast, so the sooner the sole shape is signed off, the sooner the clock starts.
What sole materials can you tool for?
EVA, rubber, TPR and combined constructions — for example a moulded EVA midsole with a rubber outsole bonded to it, or a single-density injected unit. The photos on this page are all soles from our own tooling.
Who owns the mould?
Tooling developed for your design stays dedicated to your brand and is not reused for other buyers. NDA on request.
Can you match a sole I already have?
Send the sample. We can develop tooling to the same geometry and tread, or use it as a starting point and change stack, flex grooves or tread pattern to suit your category.
Next: how a full custom shoe is developed → · all development capabilities →