All pinholes for PinBox are precision acid etched on stainless steel, Generally 302 B, but sometimes others.I considered laser drilling but decided that for PinBox, I wanted something else. Also, even with the most advanced lasers, some parts of the beam can be slightly more intense than others, and therefore create a slightly distorted pinhole. Lasers are light and as such, aligning the laser to the substrate for drilling is a very complicated process. However, with lasers, there is a draw back as well. This is a good choice for scientific and industrial applications. Lasers have the ability to drill very precise pinholes at extremely small apertures. Moving up the ladder once again one will discover laser drilling.This is not how PinBox pinholes are made.
If you were to buy a micro drill set you would typically spend more on the set than a retail pinhole. They are a big step up from a needle, but produce burrs on the substrate, require a lot of set up, and the tools aren't something that most people would have lying around. These super small drill bits have the ability to drill very small pinholes, much smaller than a needle, but nowhere near as small as a laser or acid etching. Stepping up from aluminum cans and sewing needles one will discover micro drill sets.Consider this a "creative" or "artistic" pinhole. This involves using a piece of metal, poking a hole through it with a sewing needle, and then sanding the metal flat and smooth. Most people are familiar with home-made pinholes. The more accurate and precise, the better the image the pinhole will produce. For example, a laser drilled pinhole can cost upwards of $30 each from Thor Labs, and that doesn't include shipping.
This is very important because it's hard to come by quality precision pinholes without spending a mint (at least in the USA). I am very pleased to announce that as part of the campaign promise YOU will have the choice of your favorite pinhole. Let's talk about choosing an aperture for PinBox.
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