
Special machinery construction, plant solutions and engineering services – from idea to commissioning.
3Defacto GmbH
Mühltal · Darmstadt · RiesteNew on Amplifa
The Company 3defacto
3defacto is an owner-managed engineering office and special machinery manufacturer founded in 2000 by Peter Ahlmer, headquartered in Mühltal with additional locations in Darmstadt and Rieste. More than 80 employees develop and manufacture complex special machinery, industrial plant solutions, wheel assembly machines and pipe processing machines (Copier business division). The service portfolio includes changeover-free, modular turnkey systems, engineering and design services, CNC turning and 5-axis milling, welded constructions, control cabinet construction, PLC programming and hydraulics through to installation and commissioning. With its own measuring room and technical test center as well as digital industrial automation (IXON), 3defacto serves industries such as pharmaceuticals, chemicals, food, bulk solids, automotive and general mechanical engineering – according to the “Made in Germany” standard.
- Site
- Mühltal
- Processes
- Special machinery construction, Engineering services / design, Industrial plants / automation systems, Wheel assembly systems (Wheel Assembly Machines), Pipe processing machines (Pipe Processing Machines), Welded constructions, Control cabinet construction, PLC programming
- Materials
- CNC Turning Center, 5-Axis Milling Center, Welded Constructions, PLC Programming, Hydraulics Department, Electrical Department
- Certificates
- SolidWorks certified, Certified specialist company under the WHG (German Federal Water Act)
- Founded
- 2000
- Employees
- more than 80
- Industries
- Pharmaceutical industry, Chemical industry, Bulk solids processing industry, Food industry, Building materials industry, Paper industry
- 01
Engineering / Design
- 02
CNC Turning
- 03
5-Axis Milling
- 04
Welded Constructions
- 05
Control Cabinet Construction and PLC Programming
- 06
Hydraulics
- 07
Assembly
- 08
Installation and Commissioning
Manufacturing Capacities and Processes
CNC Turning Center
Machining of turned parts for machines and plant components.
5-Axis Milling Center
Complex precision machining of components in a single setup.
Welded Constructions
Steel and structural steel constructions for machine frames and plants.
PLC Programming
Control programming for special machinery and automation systems.
Hydraulics Department
Hydraulic systems and lines for machines and plants.
Electrical Department
In-house production of control cabinets for plant control systems.
Locations

Mühltal
DEHeadquarters

Darmstadt
DEDevelopment and Manufacturing
- Materials
- Steel, stainless steel, aluminum
- CNC Turning Center
- 5-Axis Milling Center
- Welding System
- Control Cabinet Construction

Rieste
DEManufacturing and Pipe Processing Machines Site (Copier)
- Materials
- Steel, stainless steel, aluminum
- CNC Turning Center
- 5-Axis Milling Center
- PLC Programming Department
Products and Systems




Inside the production




Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Special machinery constructionAssembly | – | – | – | – | – |
| Engineering services / designEngineering | – | – | – | – | – |
| Industrial plants / automation systemsEngineering | – | – | – | – | – |
| Wheel assembly systems (Wheel Assembly Machines)Assembly | – | – | – | – | – |
| Pipe processing machines (Pipe Processing Machines)Machining | – | – | – | – | – |
| Welded constructionsJoining | – | – | – | – | – |
| Control cabinet constructionAssembly | – | – | – | – | – |
| PLC programmingEngineering | – | – | – | – | – |
| Hydraulics department (hydraulic work)Assembly | – | – | – | – | – |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC turning center | – | – | – | – | Darmstadt/Mühltal/Rieste |
| 5-axis milling center | – | – | – | – | Darmstadt/Mühltal/Rieste |
Additional services
Certifications and Quality
3defacto is SolidWorks certified and a certified specialist company under the German Federal Water Act (WHG). An in-house measuring room and a technical test center are available for inspection and testing of machines and plants.
| Evidence | Mühltal |
|---|---|
| Certified specialist company under the WHG (German Federal Water Act) | |
| SolidWorks certified |
History
- 2000
Peter Ahlmer founded 3defacto as an engineering office.
- 2022
Current General Terms and Conditions of 3Defacto GmbH, Mühltal, as of 01.08.2022.
- 2026
The Pipe Processing Machines business division will in future be operated under the Copier brand.