Bestenlehrer GmbH - Polierwerkstatt für Stahlformen
About us
Bestenlehrer GmbH
Polishing workshop since 1979
Your reliable partner for contour-accurate and distortion-free polishing of injection molding, die casting, and forming tools.
For our customers in tool and mold making, plant engineering, and many other industries, we perform the following polishing tasks, among others:
• High-gloss and mirror polishing
• Line polishing
• Preparation for etching and laser graining
• Demold polishing
• Fine blasting
• Lapping
• Tool repairs / laser welding
And exclusively:
• Laser polishing
Products & services
High glossy polishing
...our core competency! Distortion-free and contour-accurate polishing of your injection molding, die casting, or forming tools, up to a mirror finish. Polishing is a smoothing, fine finishing process for various materials. It is primarily used in tool and mold making. Almost all injection molding tools are polished to achieve an optical or functional purpose on the final plastic component. Forming tools are also polished, and in a second step, they are often coated with a hard coating to extend the service life of the tool surface. We would be happy to convince you of our quality.
Musterplatte "Oberflächen für Werkzeuge"
Our sample plate for tool surfaces supports you and your customers right from the product development stage. Surfaces of planned plastic parts can be selected using our sample plate and specified in drawings according to our company standards. This important information about the component and thus tool surface can be used and implemented in mold making and subsequent polishing without further consultation. This eliminates the need to specify Ra, Rz, or other surface characteristics. Don't leave surface specifications to chance and protect yourself from surprises.
Musterkoffer "Oberflächen für Werkzeuge"
Sample Case "Surfaces for Tools" Also known as Rugotest When the sample plate isn't enough. All surfaces have been hand-polished and feature four gloss and four brush-polished finishes. These comparison standards are suitable for the visual assessment and classification of polished surfaces, for example, on mold inserts. Use these comparison standards to determine the desired surface quality during the tool design phase. Set price: EUR 500 (plus VAT and shipping) Material: 1.2343 ESU Hardness: 50 HRC
