happytails.ai

STL Viewer

Open STL Viewer on Happytails.ai. This view has the same page content and links, with explicit tool capabilities. Read the processing notes before using a tool.

Tool capabilities

{
  "id": "stl-viewer",
  "category": "maker-tools",
  "built": true,
  "requirements": "Local mesh rendering, dimensions with chosen units and memory limits.",
  "implementation": {
    "fields": [
      {
        "key": "units",
        "label": "Model units",
        "value": "mm",
        "type": "select",
        "values": [
          "mm",
          "cm",
          "m",
          "in"
        ]
      }
    ],
    "files": true,
    "input": false,
    "accept": ".stl",
    "note": "Formats do not reliably encode units. Unit selection labels dimensions without rescaling. Mesh conversion does not repair geometry or preserve OBJ materials.",
    "experience": {
      "automatic": false,
      "single": false,
      "inputMaxLength": 1000000,
      "inputMode": "text",
      "label": "Your text",
      "placeholder": "Type or paste your input…",
      "help": "Up to 1,000,000 characters. Review the settings before running.",
      "helpParts": [
        "Up to 1,000,000 characters.",
        "Review the settings before running."
      ],
      "action": null
    },
    "mode": "explicit",
    "interactive": false
  },
  "execution": "Browser interface",
  "api": null,
  "browser_agent": {
    "supported": true,
    "name": "run_current_tool",
    "discovery": "WebMCP on the human page in a supporting browser",
    "verification": "See audit/API-AUDIT.md; availability is not verification"
  }
}

Page guide

Preview an STL mesh and inspect its dimensions.

How to use STL viewer
  1. Choose a file in STL.
  2. Review the settings, then choose Run STL viewer.
  3. Review the result, then use Copy result or a download link when available.

Useful next steps

STL to OBJOBJ to STL

Working with stl viewer

Maker utilities prepare models and dimensions for another application or machine. File conversion is only part of the workflow: scale, orientation and geometry can affect whether the result is usable.

Common questions

Can a model look correct and still fail to print?

Yes. Open surfaces, thin walls, overlapping geometry and unsupported features can cause problems that are not obvious from one view.

Does converting a mesh add detail?

No. A conversion does not recover geometry that was absent from the original. Check whether materials, textures and scene information are supported by the destination format.

Continue your workflow: STL to OBJ, OBJ to STL.