Photochemical machining is considered a suitable choice for many types of projects. While there are other machining processes available today, you may enjoy certain benefits when using chemical machining for precision metal part. In fact, photochemical machining is probably the best option for making mechanical components, such as spacers, shims, pointers, gaskets, diaphragms, clips, dials, flexures, pressure membranes, and many other applications.
You can also handle your projects that involve metal parts with tricky geometries, such as lots of holes and odd shapes. In fact, many experts believe that there is no process better than photochemical etching when dealing with metal components with complex geometries. You can handle these projects without having to spend a lot of money. You will find photochemical machining much more cost effective than punching, stamping, or water-jet cutting. It may also be a better option as compared to wire EDM.
When dealing with precision metal parts, you need to pay special attention to the machining process you use. Photochemical machining is a better choice because it does not produce any burr during machining. Other machining processes would produce parts that need to be de-burred before use. This can affect the functionality of precision metal parts, and that is why photochemical etching is usually the preferred choice in this case.
It is important to mention that when you use photo-tools you end up saving a lot of money. Most of these tools do not cost more than $300 and can be produced in 2 days or less. This is nothing less than a blessing for many businesses because they would have to spend thousands of dollars and wait for weeks to make stamping dies.
A special etching solution is used to make precision metal parts in photochemical etching. The good thing is that these parts emerge all at once mainly because the chemical solution processes through unmasked areas of the plate at the same time. This is something that makes chemical machining different from EDM, laser, or CNC punching that targets a small localized area at a time. This is another reason why this machining process is considered a much better option for complex parts with tricky geometries.
Another good reason why chemical photo etching may be a more suitable option for your precision metal parts is that it is possible to hold dimensional tolerances close to +/- 15% of the thickness of the material used. Interestingly, locational tolerances remain unaffected in most cases because photo-tools are created through CAD data and do not suffer any wear throughout the process.
Keep in mind that photochemical etching is a good option for precision metal parts, but it is not always the suitable choice for every project. Be sure to work with an experienced company to know how to complete your project in an effective way. You should take some time and conduct your research online to select a company with vast experience in etching. They should have knowledge about other etching and machining technologies as well to help you decide which process is more suitable for your project.