
Precision CNC manufacturing and plant engineering in technical plastics – from one-off parts to series production.

BENZ Feinwerktechnik
OhlsbachNew on Amplifa
About us
BENZ Feinwerktechnik is a manufacturing company specialising in plastics processing, based in Ohlsbach (Baden-Württemberg). The company manufactures technical plastic components and complex system solutions to customer drawings – from individual parts for sampling and test runs through to small and large series. Its core competencies include CNC milling and CNC turning of technical plastics, sawing, bending as well as adhesive bonding and welding; steel is also processed in small quantities. In plant engineering, containers, tanks, basins, troughs and complex special covers are produced, among other things by manual plastic welding technology. Materials processed include sheets, round rods and tubes made of materials such as Plexiglas® (PMMA), Makrolon® (PC), PA, PP, PVC, POM, PE, PEEK, PTFE and PETG. Owner Karl-Heinz Benz brings over 35 years of professional experience in plastics processing. Since May 2020, the company has manufactured in its own production hall in Ohlsbach; the business is organised as a sole proprietorship and is a member of the Freiburg Chamber of Skilled Crafts.
- Site
- Ohlsbach
- Processes
- CNC milling of plastics, Gantry milling, CNC turning of plastics, Sawing, Bending, Plastic welding work (manual), Adhesive bonding work, Plant engineering (containers, special covers, basins, troughs, tanks)
- Materials
- Plexiglas®, Makrolon®, PA, PP, PVC, POM, PE, PEEK
- Certificates
- Plastic welder certification under DVS 2212-1
- Founded
- 2015
- Industries
- Plastics processing, Plant engineering, Mechanical engineering
- 01
Consulting and project support
- 02
Sawing and bending
- 03
CNC milling and CNC turning
- 04
Welding and adhesive bonding technology
- 05
Plant engineering and assembly
Materials & Processes
Plexiglas® (acrylic glass)
Transparent engineering plastic for sheet, rod and tube components with good optical properties.
Makrolon® (polycarbonate)
Tough, break-resistant plastic for covers and components with high impact strength.
Polyamide (PA)
Abrasion- and wear-resistant engineering plastic for mechanical components.
Polypropylene (PP)
Chemically resistant material, especially for containers and welded constructions.
Polyvinyl chloride (PVC)
For containers, troughs and apparatus components in plant engineering.
Polyoxymethylene (POM)
Dimensionally stable precision plastic for milled and turned parts.
Polyethylene (PE)
Robust, chemically resistant material for technical components.
PEEK
High-performance plastic for demanding applications at high temperatures and under media exposure.
PTFE
Highly chemically and thermally resistant material for seals and sliding elements.
PETG
Transparent, tough-elastic plastic for technical moulded parts.
Steel
Metal material processed in small quantities, e.g. for constructions and plant components.
Locations

Ohlsbach
DEProduction hall / Head office
- Lot size
- Individual parts to large series
- Materials
- Technical plastics (PMMA, PC, PA, PP, PVC, POM, PE, PEEK, PTFE, PETG), steel in small quantities
- CNC milling centre (travel 700x400 mm)
- Gantry milling machine (2000x1500 mm)
- Systems for welding and adhesive bonding technology
Components & Systems



Inside the production






Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| CNC milling of plasticsMachining | – | 700 mm × 400 mm | – | Series production | Plexiglas®, Makrolon®, PA, PP, PVC, POM, PE, PEEK, PTFE, PETG |
| Gantry millingMachining | – | 2000 mm × 1500 mm | – | – | Plexiglas®, Makrolon®, PA, PP, PVC, POM, PE, PEEK, PTFE, PETG |
| CNC turning of plasticsMachining | – | – | – | – | Plexiglas®, Makrolon®, PA, PP, PVC, POM, PE, PEEK, PTFE, PETG |
| SawingMachining | – | – | – | – | Plexiglas®, Makrolon®, PA, PP, PVC, POM, PE, PEEK, PTFE, PETG |
| BendingForming | – | – | – | – | Plexiglas®, Makrolon®, PA, PP, PVC, POM, PE, PEEK, PTFE, PETG |
| Plastic welding work (manual)Joining | – | – | – | – | PP, PVC, PE, PVDF |
| Adhesive bonding workJoining | – | – | – | – | Plexiglas®, Makrolon®, PA, PP, PVC, POM, PE, PEEK, PTFE, PETG |
| Plant engineering (containers, special covers, basins, troughs, tanks)Assembly | – | – | – | – | PP, PVC, PE, PVDF |
| Steel processing in small quantitiesMachining | – | – | – | – | Steel |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC milling centre | – | – | 700x400mm travel | – | Ohlsbach |
| Gantry milling machine | – | – | 2000x1500mm | – | Ohlsbach |
Additional services
Quality
Plastic welding work is carried out by personnel holding a plastic welder certification under DVS 2212-1. Production is performed to drawing according to customer specifications, from individual parts through to series.
| Evidence | Ohlsbach |
|---|---|
| Plastic welder certification under DVS 2212-1 |
History
- 2015
Founding of BENZ Feinwerktechnik based in Kehl-Goldscheuer on 01.04.2015
- 2018
Takeover of the company Lienhard Kunststoffe in Berghaupten (April 2018)
- 2020
Investment in an own production hall in Ohlsbach (January 2020), 5 years of BENZ Feinwerktechnik (April 2020) and relocation to the new production hall (May 2020)