Promptkoi

Japanese Joinery Diagram

Stable Diffusion
By Varun Sharma Tested with Stable Diffusion SDXL 1.0

Japanese Joinery Diagram is an SDXL 1.0 prompt for a woodworking teaching sheet at 4:5. Three assembly states carry the information, and darker end-grain faces are what make the interlocking cuts readable in flat vector.

Last tested: July 2026 with Stable Diffusion SDXL 1.0

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

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Flat vector diagram of a Japanese timber joint shown apart, partly engaged and fully seated
Japanese Joinery Diagram — Stable Diffusion SDXL 1.0, Aspect ratio 4:5

Prompt 

A clean flat vector diagram of a traditional Japanese timber joint shown as a left-to-right assembly sequence in three panels, on the left the two timbers held well apart with a wide clear gap between them so both cut faces are fully exposed, in the centre the same two timbers brought halfway together with the tenon partly entered and an obvious gap still open at the shoulders, on the right the joint fully closed with the shoulders tight and the seam reduced to a single thin line, all three drawn in matching isometric projection at identical scale, warm timber tones with every cut end-grain face a shade darker than the long grain, thin even outlines, a separate blank caption strip beneath each of the three panels, a plain empty band across the top, no text, no letters, no numbers

Negative prompt 

blurry, low quality, photorealistic wood, perspective distortion, text, letters, numbers, cluttered detail, cast shadows, gradients, hidden joint faces, exploded parts flying apart

Settings

Model
Stable Diffusion SDXL 1.0
Aspect ratio
4:5
Steps
30
CFG scale
6.5
Sampler
DPM++ 2M Karras

How to use this prompt

Asking for a joint "shown three times, apart, partly engaged and seated" is not enough — it comes back as three near-identical assembled blocks, because nothing tells the model how far apart each state should be. Describing the panels one at a time and quantifying the gap in each — held well apart, halfway in with the shoulders still open, closed to a single thin seam — is what forces a readable progression. The second fix is tonal: flat vector gives every face the same value, so specifying that cut end-grain sits a shade darker than long grain keeps the interlocking surfaces legible without shadows.

Variations to try

  • Show a different joint family — a through dovetail or a kanawa splice — in the same three states
  • Add a fourth panel with the joint under load and thin arrows indicating the direction of force
flat design minimalist infographics illustration

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For developers — copy this prompt as JSON 
{
  "title": "Japanese Joinery Diagram",
  "prompt": "A clean flat vector diagram of a traditional Japanese timber joint shown as a left-to-right assembly sequence in three panels, on the left the two timbers held well apart with a wide clear gap between them so both cut faces are fully exposed, in the centre the same two timbers brought halfway together with the tenon partly entered and an obvious gap still open at the shoulders, on the right the joint fully closed with the shoulders tight and the seam reduced to a single thin line, all three drawn in matching isometric projection at identical scale, warm timber tones with every cut end-grain face a shade darker than the long grain, thin even outlines, a separate blank caption strip beneath each of the three panels, a plain empty band across the top, no text, no letters, no numbers",
  "negative_prompt": "blurry, low quality, photorealistic wood, perspective distortion, text, letters, numbers, cluttered detail, cast shadows, gradients, hidden joint faces, exploded parts flying apart",
  "model": "Stable Diffusion",
  "model_version": "SDXL 1.0",
  "settings": {
    "aspect_ratio": "4:5",
    "steps": 30,
    "cfg": 6.5,
    "sampler": "DPM++ 2M Karras"
  },
  "style_tags": [
    "flat-design",
    "minimalist"
  ],
  "use_case_tags": [
    "infographics",
    "illustration"
  ],
  "source_url": "https://promptkoi.com/prompts/stable-diffusion/japanese-joinery-diagram/"
}

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