Colmar is home to an active network of mechanical subcontractors, from CNC milling to precision Swiss machining. Each machining company in Colmar listed here covers one or more complementary processes — turning, grinding, deep-hole drilling — enabling local and regional buyers to quickly source the expertise they need. The 7 workshops listed are based in Colmar itself or in its immediate surroundings, such as Ingersheim.
Ranking updated on October 8, 2026 · per the cnc-machine methodology
Ranking of machining and precision-engineering workshops in the area. Each listing shows the processes and materials worked. Contact is made through the central form.
Atelier Mécanique Rgeiger SA is a general and precision mechanics company based in Ingersheim, in the immediate vicinity of Colmar. It carries out machining operations for professional clients.
CSA is a subcontracting company specialised in precision mechanics and industrial bar turning. It machines steel, stainless steel, aluminium, brass and copper through turning, milling and Swiss machining.
EURAMECA is a precision machining workshop founded in 1991, equipped with CNC machining centres up to 4 axes and CNC lathes. The company works on prototypes and small series in a wide range of materials. It also offers grinding and slotting machines in addition to its main equipment.
JMP Assemblage is a precision mechanics workshop offering custom machining and assembly, from prototyping through to series production. The company works with aluminium, stainless steel and technical plastics.
PROMECA is a precision general mechanics workshop offering CNC machining, twin-spindle turning, milling and surface and cylindrical grinding. The company processes ferrous and non-ferrous metals on CNC equipment.
SAMG specialises in precision general mechanics, covering milling and turning of metal parts. The company works on one-off production and small series, for professional clients.
Schoettlé 68 is a general mechanics workshop in Colmar offering precision machining, Swiss machining, milling, boring and turning. The company works on a variety of parts for local professional clients.
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| Workshop | Turning | Milling | EDM | Grinding | Batches |
|---|---|---|---|---|---|
| Atelier Mécanique Rgeiger SA | ✓ | ✓ | — | — | One-off → Small batch |
| CSA | ✓ | ✓ | — | — | Small batch → Large batch |
| EURAMECA | ✓ | ✓ | — | ✓ | One-off → Small batch |
| JMP Assemblage | ✓ | ✓ | — | — | One-off → Small batch |
| PROMECA | ✓ | ✓ | — | ✓ | Small batch → Medium batch |
| SAMG | ✓ | ✓ | — | — | One-off → Small batch |
| Schoettlé 68 | ✓ | ✓ | — | — | One-off → Small batch |
Choosing a machining subcontractor depends first on the nature of your part. A part of revolution (shaft, ring, axle) calls for turning; a prismatic part with complex shapes calls for milling, ideally 3 or 5 axes. For shapes impossible to obtain by conventional cutting, EDM becomes necessary.
Not all workshops work the same materials. Aluminium and steel are almost universal; stainless steel, titanium and superalloys require more expertise and suitable tooling, common in aerospace- and medical-oriented workshops.
For a prototype or a one-off part, favour a responsive workshop with a design office. For medium or large batches, machine capacity and automation become decisive for the unit price.
Workshops in the area cover most material-removal machining processes.
Colmar, the prefecture of the Haut-Rhin department, relies on an Alsatian industrial fabric historically geared toward precision mechanics and metal processing. The central Alsace plain, well served by the A35 motorway and its proximity to the Rhine border, has favoured the establishment of SMEs and specialised workshops meeting the needs of regional industry, particularly in mechanical equipment, food processing, and intermediate goods.
The business parks of Colmar and neighbouring towns such as Ingersheim host companies with complementary profiles: multi-process workshops mastering both milling and turning (SAMG, JMP Assemblage, Atelier Mécanique Rgeiger SA), Swiss machining specialists (CSA, Schoettlé 68), and units with extended capabilities such as grinding and deep-hole drilling (PROMECA, EURAMECA). This diversity of processes available within a short distance is a real asset for Haut-Rhin manufacturers seeking responsiveness.
The seven workshops listed around Colmar share a common technical base centred on turning and milling, processes found across the entire panel. This convergence reflects a solid general-purpose offering, able to cover a wide range of machined mechanical parts: housings, flanges, shafts, brackets and standard precision components. Two workshops — CSA and Schoettlé 68 — also offer Swiss machining (bar turning), a process suited to producing rotationally symmetric parts in medium to large series from bar stock, which extends the range toward smaller, repetitive components.
EURAMECA and PROMECA stand out for grinding, a finishing operation that achieves particularly tight surface finishes and dimensional tolerances. PROMECA also offers deep-hole drilling, a specific capability useful for hydraulic parts, moulds, or components requiring long bores. EURAMECA additionally provides slotting (mortising), a less common process aimed at producing internal keyways or specific prismatic shapes. JMP Assemblage, whose name suggests an assembly capability alongside machining, may appeal to buyers looking to reduce the number of contacts on a given project. In the absence of declared sector data, Colmar-area workshops appear to serve a broad range of regional industrial clients.
Before contacting a machining workshop in Colmar, prepare as complete a technical file as possible: a dimensioned drawing in PDF or DXF format, ideally a 3D file in STEP, precise material specification (standard grade), required surface finish, and critical tolerances. The more precise these details are from the first exchange, the more reliable the quote and the shorter the response time will be. If you have a recurring production programme, indicate the estimated annual volume: some workshops, particularly those equipped for Swiss machining such as CSA or Schoettlé 68, adapt their organisation according to order regularity.
In Colmar, the workshop landscape is mostly made up of SMEs, which implies good responsiveness but also potentially limited machine capacity for very large series or oversized parts. If your requirement involves high-precision finishing operations — cylindrical or surface grinding, tolerances down to a few microns — turn primarily to EURAMECA or PROMECA, which declare this capability. For deep-hole drilling, PROMECA is the specific contact to approach in this area.
Geographic proximity becomes especially valuable when parts are heavy or bulky, when adjustments during production are likely, or when you wish to carry out on-site inspection visits. Colmar workshops, clustered within a very short radius, allow for these back-and-forth exchanges without significant logistics costs. However, if your parts require strict sector-specific certifications — aerospace, medical, nuclear — check beforehand that the workshop you contact holds the relevant qualifications, as available data does not confirm this for these companies.
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The seven listed workshops cover turning and milling. Swiss machining (bar turning) is available at CSA and Schoettlé 68. Grinding is offered by EURAMECA and PROMECA. Deep-hole drilling is available at PROMECA, and slotting (mortising) at EURAMECA. This diversity covers most common precision mechanics needs.
Be sure to provide a dimensioned drawing (PDF or DXF), ideally a 3D file in STEP format, the standard material designation, critical dimensional and geometric tolerances, and the required surface finish. Also specify the desired quantity and whether the order is one-off or recurring: these factors directly affect unit price and lead times.
Cost mainly depends on geometric complexity, the number of operations involved (e.g. turning + grinding = two separate steps), the chosen material, required tolerance, and order quantity. Setup costs (programming, tooling) are spread across the batch: a single part costs proportionally far more than a lot of fifty identical pieces.
General mechanical SMEs, like those listed in Colmar, generally accept small series and sometimes single pieces, especially for repairs or prototyping. Swiss machining-oriented workshops (CSA, Schoettlé 68), however, are better optimised for larger volumes. Ask each workshop about their minimum order quantity during your initial contact.
Workshops equipped for grinding — EURAMECA and PROMECA — can achieve tight tolerances, in the range of a hundredth of a millimetre or better depending on configuration. Standard turning and milling typically allow tolerances of a few hundredths. For micron-level requirements, state this explicitly in your request so the workshop can confirm its capability.
This entirely depends on your industry. Aerospace (EN 9100), medical (ISO 13485), or nuclear (RCC-M) sectors require specific certifications. Available data does not confirm whether the listed Colmar workshops hold these accreditations: check directly with each company before launching a tender in these regulated fields.
Proximity becomes a real advantage when parts are heavy or bulky (high transport cost), when in-process adjustments are likely, or when on-site inspection visits are planned. For manufacturers in the Colmar area — the Alsace plain, the Mulhouse area, or corridors toward Germany and Switzerland — it also translates into shorter delivery times.
If your needs involve processes not available locally — EDM, integrated surface treatment, very high-volume Swiss machining, or sector certifications not confirmed here — it makes sense to widen your search to Mulhouse, Strasbourg, or other specialised workshops in the Grand Est region. The smaller size of Colmar-area companies may also limit heavy load capacity or very large part formats.
Broaden your search to the surrounding industrial areas.