8×10″ card, incorporating a 5 blade iris mechanism with a 3.5″ aperture, made of reflective card stock.
Opening the aperture reveals your message.
Message can be easily replaced, and the card used again.
3D printers are incredible pieces of tech. With the lowering the costs of FDM (Fused Deposition Modelling) printers in recent years, it has enabled desktop fabrication to reach the masses – both in the small business environment, and in the home. Sometimes, however, printing a seemingly simple object can also prove to be equally impossible. Including a way to 3d print leaves for an iris diaphragm…
The blade overlap control usage in the Iris Calculator is somewhat under utilized by default, as it is set to ensure there are absolutely no light leakages. But it can really help – in combination with some of the other controls – to refine your iris diaphragm design. And it is especially useful when dimensions are tight and you need to maximize all the space you have available.
I decided to do something today that I have been wanting to do for a long time; which is to stencil an image on the blades of an iris. This, I figured, has no real practical use – perhaps a new Iris Calculator business card – but none-the-less it would be an interesting effect to see. And as it’s Canada day today, what better image to use than the Canadian flag!
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.