Industrial Apocalypse Lab Terrain STL

I’m building a war-torn industrial laboratory for 28 mm gaming and need a fully modular STL kit I can print at home. Each module must be 150 × 150 mm and connect either with an integrated clip system or by dropping magnets into pre-sized recesses. Once assembled, the tiles should stack securely so I can create as many storeys as the scenario demands.

150 × 150 mm modular floor tiles
3 × 3 tiles = 450 × 450 mm playable floor
Stackable multi-storey design
6 × 3 mm magnet pockets
Printable clip system for joining modules
Plain laboratory walls
Ruined/window walls
Door-frame walls
Separate opening/closing doors
Hinge pins
Internal staircase designed for approximately 70 mm floor-to-floor rise
Stair landing
Laboratory console/equipment
Specimen tank
Optional roof frame

Key design notes
• Style: gritty industrial—think exposed girders, battered sheet-metal walls and patched concrete.
• Wall detailing: sculpted pipes and vents, inset control panels, plus chunky chemical tanks that can be placed or removed for line-of-sight changes. Working hinged doors are essential and must fit flush when closed. see image for example.
• Floors: a 1.25" (30 mm) movement grid needs to be embossed on every panel. The walking surface itself should be a mix mesh grating so light can spill through from lower levels. and rusty metal panels
• Vertical circulation: printable stair flights or ladders that lock into the clip system and match the grid.

Deliverables
1. Complete set of watertight STL files, logically named (e.g., Floor_Tile_A, Wall_Pipe_Tank, Door_Hinged).
2. Assembly guide PDF with exploded views showing clip and magnet positions.
3. Test-print verification screenshots or photos proving that doors swing freely and two or more floors stack without wobble.

Acceptance criteria
• Prints without supports on an Bambu A1 or A1 mini -sized build plate.
• Clip tolerances ±0.15 mm; magnet cavities ±0.1 mm.
• No mesh errors in Netfabb or PrusaSlicer.

Once the core kit is approved, I will commission extra scenic scatter, but for now the focus is the modular, stackable building described above.