Strobist flash "cookie" (cucoloris)

prusaprinters

<p>A cucoloris ("cookie" because it's hard to pronounce) is a flat object that's designed to break up the light. &nbsp;Unlike a gobo, it's not in the middle of a lens assembly, so it's going to make diffuse and soft shadows instead of hard-edged shadows. &nbsp;On the other hand, a gobo assembly for a flash would require you to source lenses and everything.</p><p>If you look at the photos of people I've posted, you can see the desired effect where one of the lights has been broken up by a cookie to add visual interest.</p><p>I had slightly different design goals than your average cookie. &nbsp;I wanted something that would be kinda small, both to make it fit on a printer bed and print in a reasonable amount of time, but also because I'd want to toss it in my backpack and take it to a cosplay event. &nbsp;What I found was that the best way to get a good effect without making it bigger or using more material was to add thickness around the edges of the holes.</p><p>I wasn't overly satisfied with any of the printable brackets for mounting light modifiers, so I ended up punting on that issue by giving it a coldshoe so I could use a <a href="https://www.amazon.com/gp/product/B09FPWWDWN/">Neewer super-clamp arm</a> to hold it in front of the flash.</p><p>In the photo I posted, you will note that I'm using another design from this site – the <a href="https://www.printables.com/model/64023-canon-speedlight-grid">Canon Speedlight Grid</a> that, in spite of its name, works on my TT600 flashes.</p><p>Generally you want the flash to be fairly zoomed in and you want to have the cookie angled. &nbsp;One of the benefits of the thickness around the holes is that you don't need to angle it very much for it to start breaking up the light.</p><p>Like most stuff I do, it's an OpenSCAD parametric design. &nbsp;It requires you to install the <a href="https://github.com/revarbat/BOSL2">BOSL2 library</a>, but then you can generate your own version easily or even make your own patterns.</p><p>You probably want to print this out of something black and opaque. &nbsp;I printed mine out of black PETG so I wouldn't need to worry about it bending in the heat. &nbsp;It also helps to have a fat nozzle so it'll print faster. &nbsp;I printed mine with a 1mm Bondtech CHT nozzle and that really helped it print in an entirely reasonable amount of time.</p>