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Thunderhead Studio

HEXTECH: Trinity City - Metro Defense Expansion

HEXTECH: Trinity City - Metro Defense Expansion

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Regular price $24.99 USD
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Trinity City takes no chances with external threats and has poured a sizable amount of its vast wealth into the protection and safekeeping of its borders.   A large external wall surrounds the entire perimeter of the city, tall enough to hinder access by enemy mechs attempting to jump over, and thick enough to be completely immune to conventional weaponry. 

This mighty bastion is strong enough to support defending mechs and vehicles, as well as having a protected channel for personnel and supplies to be transported safely during combat.  

Supported by various Sigma Dome complexes that house multiple Battlemech and heavy equipment, these blister hangers have been constructed into the walls, ensuring they are always close and ready to be deployed when under attack.  These Mech Hangars have lifts to the roof, which the defenders can then access the walls without needing jump jets of their own. 

In addition, in some places of the city, several Sigma Domes have been connected with protected corridors, allowing large amounts of defending mechs to be deployed where they are needed while under cover of steel and concrete. 

Access to the city is maintained by road through a hardened tunnel entrance that is screened by security, or by highway overpass.  The highway bridge has a mechanism that during attack will collapse and prevent easy access to the attacker. 

HEXTECH- Defensive Turret Expansion is shown in product renders to demonstrate compatibility with hardpoints, files are not included with this expansion.

Product photos show older, v1 Sigma Dome with some unavailable pieces. These will be updated to reflect their replacements.

Included files:


This bundle includes HEXTECH Universal features and Magnet Connections, read below for more information

Files Included:

  • Curtain Walls
  • Sigma Dome Hangar
    • Sigma Dome Standard Corner (Hexed and Universal Format)
    • Sigma Dome Curtain Wall Corner, Male and Female(Hexed and Universal Format)
    • Sigma Dome Corridor Corner, Male and Female (Hexed and Universal Format)
    • Sigma Dome Mech Access Hatch (Hexed and Universal Format)
    • Sigma Dome Corridor Extender (Hexed and Universal Format)

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  • Easy-to-print

    The entire HEXTECH line is specifically designed to print easily, and to fit on the most common consumer grade FDM printers. All pieces are tested on a 220mm x 220mm print bed (Creality Ender 3, Elegoo Neptune 2, and equivalent models).

  • HEXTECH Universal

    The Universal base system was designed to give players the option of removing their terrain pieces from the HEXTECH base and using them in other gaming systems. Change formats on the fly without compromise!


    Many HEXTECH files include sockets intended to fit 3mm x 2mm (1/8" x 1/16") neodymium magnets, allowing for modular connections. Taking the time to fit magnets (always check the polarity) will make it fast and easy to change up your game board.

  • Free Sample Bundle

    We are confident you will love HEXTECH, so we invite you to download the Sample Bundle FREE before you buy! Get a taste of the system on us!