Is this 3D model free to download?

Yes, Portal Sentry Turret is free to download from MyMiniFactory. Open it in the free Thinger app, or use the "Download from MyMiniFactory" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by MyMiniFactory. Use the "Download from MyMiniFactory" 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 Linus Boréus, published on MyMiniFactory. 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.

Portal Sentry Turret

Source: MyMiniFactory by Linus Boréus

The Portal Sentry Turret is a free printable 3D model from MyMiniFactory by Linus Boréus. This is a 40cm high static model with room for electronics, it is the same size as this movable tracking model from which also contains instructions on how to make the metal. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from MyMiniFactory

461 saves Source: MyMiniFactory Updated 2026-09-18

Tags: electronics, game, model, robot, science, portal, valve, Turret, aperture, portal2

About this model

This is a 40cm high static model with room for electronics, it is the same size as this movable tracking model from which also contains instructions on how to make the metal legs: I made it from screen shots from in the game and some things are optimized or removed to be printable. There are extra parts for the guns that have been made with extra clearance, and the split ammo box for gluing to the shell. The shell, dividers and the side panels have holes for 1.75mm filament as locating pins. The parts are not oriented into the optimal orientation for printing but all have a flat face to be printed from. I recommend printing the guns with the barrels pointing up and it gave me a nice result.Many parts require supports as you can only optimize so much before taking away too much and alter…

Frequently asked questions

Is this 3D model free to download?: Yes. Portal Sentry Turret is free to download from MyMiniFactory. Open it in the free Thinger app, or use the "Download from MyMiniFactory" link above to open the original listing.
Where is the STL hosted?: The download is hosted by MyMiniFactory, not by Thinger. We link you directly to the original listing by Linus Boréus.
Who made this model?: Designed by Linus Boréus, published on MyMiniFactory. 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.

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