Is this 3D model free to download?

Yes, Curta Calculator Mods 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 mcmaven, 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.

Curta Calculator Mods 3D printable model by mcmaven

Curta Calculator Mods

Source: Thingiverse by mcmaven

The Curta Calculator Mods is a free printable 3D model from Thingiverse by mcmaven. I made a number of design modifications that I felt better supported 3D printing and the use of plastic vs. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

68 saves Source: Thingiverse Updated 2026-10-23 License: CC-BY · commercial OK Category: 3D Printer

Tags: Curta, Calculator, Mods

About this model

I made a number of design modifications that I felt better supported 3D printing and the use of plastic vs. metal components. 3/28/19 Added case/container files. Tens Sliders I believe that Mr. Wu’s STLs for the Tens Sliders were based on models of the original metal versions of the components. I had trouble with my 3D printed sliders because the arms that engaged the Tens Barrel were too fragile and too flexible. I redesigned them so I didn’t need to enable supports for the parts, and made them stiffer. Also I added a fillet to the surface that engaged the transmission gear teeth so they were less likely to snag on the edge. After the print is complete, I used some dykes to snap off the support for the ‘tab’ that engaged the Tens Barrel. Figure 1: Tens Slider for Turns Counter I suspect t…

Frequently asked questions

Is this 3D model free to download?: Yes. Curta Calculator Mods 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 mcmaven.
Who made this model?: Designed by mcmaven, 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.