3. Precision stamping method: Another small hole machining method is through precision stamping. This method has extremely high mold costs. Usually rarely used.

4. Etching process to solve the problem of 0.2 holes: Etching process is a processing method that transfers the working pattern to be processed onto the board through exposure and development, and then uses chemical solution to corrode the material, ultimately forming small holes. The etching process has obvious benefits: it has no burrs, high roundness of the holes, can process very dense small holes without changing the material properties of the product, does not generate heat, and the product will not deform. Simply put, what kind of material is it and what it still looks like after processing the small hole.

2、 Processing technology for aperture values smaller than the thickness of the board itself

1. Adopt laser cutting method. Still cannot process densely packed small holes

2. Methods of discharge. Fangdian''''s method can also process small holes, mainly for situations where the number of holes is not large.

Richard.Liu/刘家成

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