Is this 3D model free to download?

Yes, Parametric 12V/24V Ammo Can Power Supply 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 Sparkletron, 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 12V/24V Ammo Can Power Supply 3D printable model by Sparkletron

Parametric 12V/24V Ammo Can Power Supply photo 1

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Parametric 12V/24V Ammo Can Power Supply

Source: Thingiverse by Sparkletron

The Parametric 12V/24V Ammo Can Power Supply is a free printable 3D model from Thingiverse by Sparkletron. A compact, removable 12V/24V power supply built around a standard metal ammo can and two common 12V 7Ah LiFePO4 batteries connected in series. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

30 saves Source: Thingiverse Updated 2026-11-02 License: CC-BY-NC-SA · non-commercial Category: Tools & Workshop

Tags: 12v, 12V 24V, 12V LiFePo4 Battery, 24v, ammo box, ammo can, anderson powerpole, anderson powerpoles, battery, battery box, freecad, lifepo4, LiFePo4 battery, parametric, parametric design

About this model

A compact, removable 12V/24V power supply built around a standard metal ammo can and two common 12V 7Ah LiFePO4 batteries connected in series. If you're like me, you use 12V power for almost all of your amateur radio operations. But perhaps you have a single outlier that requires 24V. Maybe a loop antenna from Ciro Mazzoni! What to do? The goal was to create a 12V/24V power supply from common 12V 7Ah batteries, avoiding boost circuits that can introduce unwanted noise into ham radio operations, while fitting everything into a skinny ammo can without modifications to the ammo can itself (no drilling, punching, etc). The result is a three-piece printed battery-retention system that can be removed at any time, leaving the ammo can completely intact. The Design The printed assembly consists of…

Frequently asked questions

Is this 3D model free to download?: Yes. Parametric 12V/24V Ammo Can Power Supply 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 Sparkletron.
Who made this model?: Designed by Sparkletron, 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.