Selecting the Right Etching Technology for Your Product
Product engineers possess extensive expertise in component design and manufacturing. Many are thoroughly familiar with the intricacies of the chemical etching process and have likely employed it in previous product developments. However, the rapidly evolving manufacturing industry means that even experienced engineers must consider whether to select a component manufacturer offering vertical etching, horizontal etching, or a combined approach.
Understanding the differences between etching processes—particularly with regard to prototyping and series production—can help answer this critical question.
Horizontal Etching
As the name suggests, the workpiece is positioned horizontally and conveyed through various process chambers on a conveyor belt during the etching process. During horizontal etching, the process cannot be interrupted by the operator to verify accuracy. Therefore, a certain trial-and-error approach is required to achieve the desired result. Minor adjustments are first tested on individual panels before the entire series is manufactured.
For large production volumes, the loss of several panels for calibration purposes has minimal impact on the overall price. For this reason, horizontal etching is ideally suited for large series with high repeatability. The precision achieved is generally very good, though it does not reach the level of vertical etching. It is therefore a cost-effective solution for less critical components.
Vertical Etching
In contrast, vertical etching enables the processing of individual workpieces in the machine, allowing precise control over the entire etching process. Since the machine can be stopped and started at any time, an experienced operator can make adjustments during the process, achieving finer control over the final product.
The slower and more labor-intensive processing results in higher project costs. However, vertical etching delivers the highest precision in the field of chemical etching processes. It is therefore the preferred choice for projects where quality is the top priority.
The Limitations of a Single Etching Process
Manufacturing a product on the wrong equipment can result in unnecessary production in small batches (increasing costs) or failure to achieve the required precision (raising the risk of functional issues). A manufacturer offering both horizontal and vertical etching can flexibly switch between processes, providing the appropriate combination of precision and cost while adapting production to changing requirements.
Combined Approaches
Both horizontal and vertical etching have their respective strengths and ideal applications. Companies utilizing only one of these processes can manufacture either particularly cost-effectively or with exceptional precision. Thin Metal Parts, however, has the capability to employ both processes and can therefore offer the most economical solution for any application, production volume, and desired precision level.
The combination of both processes enables greater flexibility in manufacturing as well as higher overall quality—and thus the production of unique precision components. Through the use of multiple processes, hybrid precision parts can be created that are unique worldwide.
The integration of horizontal and vertical etching allows the manufacture of prototypes through to large-scale series production. Customers value this flexibility, as they do not need to change suppliers for each phase of the project. A long-term partnership with a single manufacturer offers significant efficiency advantages, saving time and costs while reducing operational complexity and delays.
Furthermore, a combined approach creates important redundancies for companies that cannot afford production downtime. This capability is particularly significant for the aerospace, computer, medical, and electronics industries.
Making the Right Choice
Manufacturers with limited service offerings tend to lock their customers into available processes regardless of actual needs or outsource services—often with additional cost markups. Therefore, selecting the right partner is critical. With Thin Metal Parts, a provider capable of combining different processes, a customized manufacturing approach emerges that is precisely tailored to the desired precision level. The result is an individualized production plan that delivers both superior service and an overall higher-quality end product.
