Is this 3D model free to download?

Yes, Parametric Iris Aperture is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Thingiverse. Use the "Download from Thingiverse" link on this page to open the original listing and grab the file, or save it to your print queue in the free Thinger app.

Designed by Zippitybamba, published on Thingiverse. Please credit the creator when sharing your print.

Can I print this at home?

Yes. This is a printable 3D model intended for home FDM and resin printers. Check the original listing for suggested print settings.

Parametric Iris Aperture

Source: Thingiverse by Zippitybamba

The Parametric Iris Aperture is a free printable 3D model from Thingiverse by Zippitybamba. I've uploaded 3 sets of .stl files, including a small, a medium, and a large iris. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

106 saves Source: Thingiverse Updated 2026-10-16

Tags: Parametric, Iris, Aperture

About this model

I've uploaded 3 sets of .stl files, including a small, a medium, and a large iris. The size is indicated in the filename "ros", meaning "radius of outer shell" in millimeters. You need one each of the shell, lid, lever, and blades in a given size. If you delve into the OpenSCAD file, you can make any size you like. To assemble: 1. Place one blade, flat side down, inside the main shell. 2. Position the blade so that it is rotated to the "open" state, with the most-clockwise gear of the blade engaged in the most-clockwise gear of the shell. 3. Continue placing blades like this in clockwise order, at each of the gear groups inside the main shell. Each blade will overlap the blade previously placed. 4. Placing the final blade will be tricky, as it must slide over the previous blade and under t…

Frequently asked questions

Is this 3D model free to download?: Yes. Parametric Iris Aperture is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link above to open the original listing.
Where is the STL hosted?: The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by Zippitybamba.
Who made this model?: Designed by Zippitybamba, published on Thingiverse. Please credit the creator when sharing your print online.
Can I print this at home?: Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.