Promptkoi

Steampunk Copper Diving Suit in a Brass Workshop

Stable Diffusion
By Varun Sharma Tested with Stable Diffusion SDXL 1.0

An SDXL prompt for a 3:4 steampunk concept: a copper and brass deep-sea diving suit standing upright in a workshop, riveted copper helmet with single round viewing porthole, brass chest plate with pressure valves, air hoses coiled at the feet, leather and canvas straps, wooden stand, warm workshop light.

Last tested: August 2026 with Stable Diffusion SDXL 1.0

Part of the Stable Diffusion prompt library · see more vintage prompts .

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Steampunk copper diving suit with riveted helmet and viewing porthole standing in a brass workshop
Steampunk Copper Diving Suit in a Brass Workshop — Stable Diffusion SDXL 1.0, Aspect ratio 3:4
Commercial use included

Prompt 

A steampunk copper and brass deep-sea diving suit standing upright in a workshop, the suit with a riveted copper helmet featuring a single round viewing porthole, a brass chest plate with pressure valves and air hoses coiled at the feet, heavy leather and canvas shoulder straps, the suit mounted on a wooden stand, workbench with tools visible behind, warm workshop light from above, dust particles in the air, no text, no letters

Negative prompt 

blurry, low quality, deformed, text, watermark, signature, modern materials, plastic, fibreglass, electric wires, LED, neon, cartoon, anime, person wearing the suit, outdoor scene, bright sunlight, flat lighting

Settings

Model
Stable Diffusion SDXL 1.0
Aspect ratio
3:4
Steps
30
CFG scale
7
Sampler
DPM++ 2M Karras

How to use this prompt

"Riveted copper helmet" rather than "metal helmet" holds the steampunk identity — copper patina and rivets are the two visual signals the model needs. "Single round viewing porthole" is the helmet's defining feature; without it the helmet reads as a motorcyclist's helmet. "Pressure valves and air hoses" prove the suit is functional, not decorative. "Air hoses coiled at the feet" is a composition choice: coiled hoses suggest the suit has just been used, giving the scene a narrative. "Mounted on a wooden stand" is non-negotiable; without it the suit looks like someone is wearing it. "Heavy leather and canvas shoulder straps" are the period materials — synthetic straps break the Victorian register.

Variations to try

  • Replace the workshop with a submarine interior with porthole windows showing ocean
  • Swap the suit for a brass jetpack prototype on a test rig with fuel lines
vintage moody concept art character design

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Vintage Stable Diffusion Prompts Moody Stable Diffusion Prompts Moody Concept Art Prompts Vintage Concept Art Prompts

What to do next

Adapt it →

Open this prompt in the Stable Diffusion builder, pre-filled, and change one layer at a time.

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For developers — copy this prompt as JSON 
{
  "title": "Steampunk Copper Diving Suit in a Brass Workshop",
  "prompt": "A steampunk copper and brass deep-sea diving suit standing upright in a workshop, the suit with a riveted copper helmet featuring a single round viewing porthole, a brass chest plate with pressure valves and air hoses coiled at the feet, heavy leather and canvas shoulder straps, the suit mounted on a wooden stand, workbench with tools visible behind, warm workshop light from above, dust particles in the air, no text, no letters",
  "negative_prompt": "blurry, low quality, deformed, text, watermark, signature, modern materials, plastic, fibreglass, electric wires, LED, neon, cartoon, anime, person wearing the suit, outdoor scene, bright sunlight, flat lighting",
  "model": "Stable Diffusion",
  "model_version": "SDXL 1.0",
  "settings": {
    "aspect_ratio": "3:4",
    "steps": 30,
    "cfg": 7,
    "sampler": "DPM++ 2M Karras"
  },
  "style_tags": [
    "vintage",
    "moody"
  ],
  "use_case_tags": [
    "concept-art",
    "character-design"
  ],
  "source_url": "https://promptkoi.com/prompts/stable-diffusion/steampunk-copper-diving-suit/"
}

The whole library is available as an open JSON dataset · developer docs.