Essential Tips Photo Etching Design Engineers Should Know: Hole Configurations

This is the second post in a series of four that discusses essential tips that design engineers should know to create better photo etching designs.

Last week, we discussed a trick for creating squared corners

In this post, we’ll discuss how design engineers should configure holes in their designs.

A good rule of thumb is to keep your hole configurations similar in a given piece. This is because different configurations tend to etch at different rates.

But you can’t always keep the hole configurations consistent. Some designs just need various hole sizes – and that’s where smart design comes in.

The solution is to make sure you use a common width etch band for making each hole configuration.

 

Hole Configuration

The above figure shows a variety of hole sizes, but utilizes the same width etch band.

The etch band presents the same surface area to the etchant, and therefore etches more uniformly.

Advanced photo etching tips design engineers should know.