The Bench · N° 21

Why an independent watchmaker may not be able to get the parts

Some manufacturers limit parts, tools and technical information to approved service networks. That can leave a capable independent repairer unable to complete an otherwise straightforward job.

Hen & Mills Editorial · 4 min read · 28 August 2026

A local watchmaker may know exactly what is wrong with your watch and still be unable to repair it. The obstacle is often access rather than skill.

Many manufacturers control the supply of branded components, specialised tools, software and technical documents. Some sell only to approved workshops. Others require a particular bench setup, training history or annual volume before opening an account.

The result is a service system shaped by both engineering and commercial policy.

Parts are not interchangeable stock

A mechanical movement contains many components that are specific to a calibre or even a particular revision. A crown, tube, crystal, bezel or bracelet part can also be unique to one case reference.

Generic consumables such as some mainsprings, gaskets or screws may be available through trade suppliers. Branded cosmetic and movement parts are more likely to be controlled.

Even when a similar component appears to fit, dimensions, materials and tolerances can differ. A responsible watchmaker will not treat resemblance as proof of compatibility.

What an approved account can require

Manufacturers may assess the workshop, equipment, qualifications and security arrangements before supplying parts. They can require pressure-testing equipment, cleaning machines, timing instruments, brand-specific tools and documented training.

Those requirements are not meaningless. Modern cases and movements can need correct fixtures, procedures and quality checks.

The difficulty is that the cost can be too high for a small workshop, especially if it sees only a few watches from that brand each year.

Tools and information matter too

Possessing the replacement part is only part of the repair. A workshop may also need a case-opening tool, movement holder, electronic tester, programming interface or current service specification.

Technical documents can identify lubrication points, torque values, component updates and test procedures. Without them, the watchmaker must decide whether the job can be done safely from experience and available information.

A careful refusal is often better than an improvised repair.

Why brands restrict access

Manufacturers commonly argue that controlled networks protect repair quality, parts traceability, water-resistance standards and the customer's warranty. A central network also gives the brand more consistent records and control over cosmetic refinishing.

There is a legitimate quality-control case for some restrictions. A damaged case or incorrectly fitted gasket can be expensive and unsafe for the watch.

At the same time, tight control reduces the owner's choice of repairer and can raise cost, travel distance and turnaround time. Both effects can be true.

What this means for an independent watchmaker

An independent may be able to service the base movement but not obtain the signed crown, proprietary rotor, shaped crystal or case gasket needed to finish the watch properly.

They may also decline a job if opening the case could create a problem they cannot resolve. For example, replacing a worn movement part is of limited use if the watch cannot then be pressure tested to its intended standard.

The refusal does not necessarily mean the movement is beyond repair. It may mean the workshop cannot promise a complete, supported result.

The role of movement families

Watches based on widely used movements can be easier to support because compatible technical parts and knowledge are more broadly available. Even then, the brand may have modified the calibre or used proprietary external components.

A calibre number on the rotor is therefore a starting point, not a guarantee of open parts access.

Before approving work, the watchmaker should confirm the exact movement version and case reference.

Warranty and later service

During the warranty period, using an authorised service centre may be the clearest route because the manufacturer controls the remedy. Outside warranty, the owner may have more practical options, but parts policy still matters.

An independent service can be excellent when the workshop has the parts, tools and experience. An authorised service can be the only realistic choice for a proprietary movement or connected electronic watch.

The right decision depends on the fault and the support available for that reference.

What to ask before buying

If long-term service choice matters to you, ask who can obtain parts for the watch and whether the movement is proprietary. Find out where warranty and later repairs are performed.

For a discontinued model, ask whether critical case and movement parts remain available. No seller can promise indefinite supply, but a clear service route is better than assuming one exists.

Owners of vintage watches should also ask whether the manufacturer still accepts the reference and how it handles unavailable original components.

What to ask when seeking a repair

Give the watchmaker the reference, calibre and a clear description of the fault. Ask whether they can source genuine or suitable parts, pressure test the case and warranty the work they propose.

If they cannot take the job, ask which part or requirement is blocking it. That answer may help an authorised centre quote accurately and tells you whether the issue is technical, cosmetic or administrative.

Avoid pressuring a workshop to fit an uncertain substitute merely to keep the price down.

A service network is part of the product

A watch is not only the object bought today. It also depends on future access to knowledge, components and people willing to work on it.

Restricted parts can support consistent factory service, but they can also make an owner dependent on one network. Broad parts access can improve choice, though quality still varies between workshops.

Neither the brand name nor the word independent settles the matter. The useful question is whether the repairer in front of you has the specific access and capability required for your watch.