Manufacturing mechanical an iris diaphragm blade, identically, multiple times is a challenge. Usually you’re dealing with very thin material and needing to mount pins securely, with a high degree of accuracy. Here is a somewhat subjective run through of various methods of making blades for your iris.

Building an iris diaphragm needn’t always require specialist tools and materials. A perfectly functional aperture can be easily created from craft materials found around the home. All it takes is a little patience and a steady hand.