{
  "title": "Pottery shrinkage calculator",
  "human_url": "https://happytails.ai/en/calculators/pottery-shrinkage-calculator/",
  "agent_url": "https://happytails.ai/agents/en/calculators/pottery-shrinkage-calculator/",
  "language": "en",
  "markdown_url": "https://happytails.ai/en/calculators/pottery-shrinkage-calculator.md",
  "content": "Pottery shrinkage calculator\nConvert wet, dry and fired dimensions using measurements from your own clay test bar or a known total shrinkage rate.\nHow can we improve this tool?\nReport a problem or share an idea.\nPlease leave out private information. Your message and the tool name go to our team via PostHog.\nHow to use Pottery shrinkage calculator\nEnter the measured inputs and select their units.\nReview the calculated dimensions, counts and rounding.\nDownload the result and verify it against a sample before making the full project.\nUseful next steps\n3D print shrinkage compensator\nFabric shrinkage calculator\nUse a test bar from the same process\nEnter measurements from the wet, dry and fired stages of the same test bar. Select the stage of the dimension you know. The calculator shows the equivalent dimensions at the other measured stages.\nKeep stage percentages separate\nA 100 mm wet bar that dries to 95 mm and fires to 85.5 mm has 5% drying shrinkage and 10% further firing shrinkage. The combined shrinkage is 14.5%, because percentages compound. Known total mode converts wet and fired dimensions only.\nSave the calculation\nDownload a CSV of the results or instructions, a readable text report and a JSON report with values, formulas and assumptions. Calculations run locally on your device. Unit changes keep the numbers already entered, so check the selected units before using the result.",
  "content_format": "text/plain",
  "visibility": "public",
  "links": [
    {
      "name": "3D print shrinkage compensator",
      "url": "https://happytails.ai/en/calculators/3d-print-shrinkage-compensator/"
    },
    {
      "name": "Fabric shrinkage calculator",
      "url": "https://happytails.ai/en/calculators/fabric-shrinkage-calculator/"
    }
  ],
  "tool": {
    "id": "pottery-shrinkage-calculator",
    "category": "calculators",
    "built": true,
    "requirements": "Each measured stage and total shrinkage must fall between -50% and 95%. No kiln settings, clay presets or dry-stage estimate from total shrinkage alone.",
    "implementation": {
      "fields": [
        {
          "key": "mode",
          "label": "Shrinkage input",
          "value": "Measured stages",
          "type": "select",
          "values": [
            "Measured stages",
            "Known total shrinkage"
          ]
        },
        {
          "key": "wetSample",
          "label": "Wet test-bar dimension",
          "value": 100,
          "type": "number",
          "min": 0,
          "max": 1000000000,
          "step": "any",
          "showWhen": {
            "mode": [
              "Measured stages"
            ]
          }
        },
        {
          "key": "drySample",
          "label": "Dry test-bar dimension",
          "value": 95,
          "type": "number",
          "min": 0,
          "max": 1000000000,
          "step": "any",
          "showWhen": {
            "mode": [
              "Measured stages"
            ]
          }
        },
        {
          "key": "firedSample",
          "label": "Fired test-bar dimension",
          "value": 85.5,
          "type": "number",
          "min": 0,
          "max": 1000000000,
          "step": "any",
          "showWhen": {
            "mode": [
              "Measured stages"
            ]
          }
        },
        {
          "key": "sampleUnit",
          "label": "Test-bar unit",
          "value": "mm",
          "type": "select",
          "values": [
            "mm",
            "cm",
            "m",
            "in",
            "ft",
            "yd"
          ],
          "showWhen": {
            "mode": [
              "Measured stages"
            ]
          }
        },
        {
          "key": "totalShrink",
          "label": "Total wet-to-fired shrinkage (%)",
          "value": 14.5,
          "type": "number",
          "min": -50,
          "max": 95,
          "step": "any",
          "showWhen": {
            "mode": [
              "Known total shrinkage"
            ]
          }
        },
        {
          "key": "inputStage",
          "label": "Stage of the dimension you know",
          "value": "Fired",
          "type": "select",
          "values": [
            "Wet",
            "Dry",
            "Fired"
          ]
        },
        {
          "key": "dimension",
          "label": "Dimension at that stage",
          "value": 100,
          "type": "number",
          "min": 0,
          "max": 1000000000,
          "step": "any"
        },
        {
          "key": "unit",
          "label": "Dimension and output unit",
          "value": "mm",
          "type": "select",
          "values": [
            "mm",
            "cm",
            "m",
            "in",
            "ft",
            "yd"
          ]
        }
      ],
      "input": false,
      "live": true,
      "presentation": "metrics",
      "note": "Convert between measured wet, dry and fired sizes. Dry-stage conversion needs Measured stages mode. Use a test bar from the same clay and firing process. Changing units keeps the entered numbers. All calculations stay on your device. Download the report for formulas, assumptions and calculated values.",
      "experience": {
        "automatic": true,
        "single": false,
        "inputMaxLength": 1000000,
        "inputMode": "text",
        "label": "Your text",
        "placeholder": "Type or paste your input…",
        "help": "Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.",
        "action": null
      },
      "mode": "automatic",
      "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"
    }
  },
  "markdown": "# Pottery shrinkage calculator\n\n- Human page: https://happytails.ai/en/calculators/pottery-shrinkage-calculator/\n- Markdown: https://happytails.ai/en/calculators/pottery-shrinkage-calculator.md\n- Structured JSON: https://happytails.ai/agents/en/calculators/pottery-shrinkage-calculator/index.json\n- Visibility: public\n\n## Tool capabilities\n\n| Property | Value |\n| --- | --- |\n| Tool ID | `pottery-shrinkage-calculator` |\n| Category | calculators |\n| Implementation | Registered implementation. Registration alone is not a production-quality guarantee. |\n| Browser execution | Automatic updates after valid input or file selection. |\n| Browser processing | Browser; see tool notes for network behavior. |\n| HTTP API | Not callable through HTTP. |\n| Browser-agent interface | run_current_tool |\n\n### Implementation notes\n\nConvert between measured wet, dry and fired sizes. Dry-stage conversion needs Measured stages mode. Use a test bar from the same clay and firing process. Changing units keeps the entered numbers. All calculations stay on your device. Download the report for formulas, assumptions and calculated values.\n\n### Inputs and settings\n\nNo free-text input is required. Use the file inputs and/or settings below.\n\n| Setting | Meaning | Control type | Default | Constraints |\n| --- | --- | --- | --- | --- |\n| `mode` | Shrinkage input | select | \"Measured stages\" | Allowed: Measured stages, Known total shrinkage |\n| `wetSample` | Wet test-bar dimension | number | 100 | min=0 max=1000000000 step=any |\n| `drySample` | Dry test-bar dimension | number | 95 | min=0 max=1000000000 step=any |\n| `firedSample` | Fired test-bar dimension | number | 85.5 | min=0 max=1000000000 step=any |\n| `sampleUnit` | Test-bar unit | select | \"mm\" | Allowed: mm, cm, m, in, ft, yd |\n| `totalShrink` | Total wet-to-fired shrinkage (%) | number | 14.5 | min=-50 max=95 step=any |\n| `inputStage` | Stage of the dimension you know | select | \"Fired\" | Allowed: Wet, Dry, Fired |\n| `dimension` | Dimension at that stage | number | 100 | min=0 max=1000000000 step=any |\n| `unit` | Dimension and output unit | select | \"mm\" | Allowed: mm, cm, m, in, ft, yd |\n\n### Browser-agent workflow\n\n1. Open the human page in a browser that supports WebMCP.\n2. Discover the interface exposed by that page; use its actual schema.\n3. Select files on the page first when the tool requires files.\n4. Call `run_current_tool` with valid input and settings.\n5. Inspect the returned result or error and the displayed output. Retrieve files from the displayed download links.\n\nCalls do not automatically copy or download results. Browser permissions still apply. Interface availability alone is not proof of successful execution.\n\n### Planning specification\n\nEach measured stage and total shrinkage must fall between -50% and 95%. No kiln settings, clay presets or dry-stage estimate from total shrinkage alone.\n\nThis describes intended requirements. Use the implementation notes, interface schema and observed output to determine current support.\n\n### Complete machine-readable capability record\n\n```json\n{\n  \"id\": \"pottery-shrinkage-calculator\",\n  \"category\": \"calculators\",\n  \"built\": true,\n  \"requirements\": \"Each measured stage and total shrinkage must fall between -50% and 95%. No kiln settings, clay presets or dry-stage estimate from total shrinkage alone.\",\n  \"implementation\": {\n    \"fields\": [\n      {\n        \"key\": \"mode\",\n        \"label\": \"Shrinkage input\",\n        \"value\": \"Measured stages\",\n        \"type\": \"select\",\n        \"values\": [\n          \"Measured stages\",\n          \"Known total shrinkage\"\n        ]\n      },\n      {\n        \"key\": \"wetSample\",\n        \"label\": \"Wet test-bar dimension\",\n        \"value\": 100,\n        \"type\": \"number\",\n        \"min\": 0,\n        \"max\": 1000000000,\n        \"step\": \"any\",\n        \"showWhen\": {\n          \"mode\": [\n            \"Measured stages\"\n          ]\n        }\n      },\n      {\n        \"key\": \"drySample\",\n        \"label\": \"Dry test-bar dimension\",\n        \"value\": 95,\n        \"type\": \"number\",\n        \"min\": 0,\n        \"max\": 1000000000,\n        \"step\": \"any\",\n        \"showWhen\": {\n          \"mode\": [\n            \"Measured stages\"\n          ]\n        }\n      },\n      {\n        \"key\": \"firedSample\",\n        \"label\": \"Fired test-bar dimension\",\n        \"value\": 85.5,\n        \"type\": \"number\",\n        \"min\": 0,\n        \"max\": 1000000000,\n        \"step\": \"any\",\n        \"showWhen\": {\n          \"mode\": [\n            \"Measured stages\"\n          ]\n        }\n      },\n      {\n        \"key\": \"sampleUnit\",\n        \"label\": \"Test-bar unit\",\n        \"value\": \"mm\",\n        \"type\": \"select\",\n        \"values\": [\n          \"mm\",\n          \"cm\",\n          \"m\",\n          \"in\",\n          \"ft\",\n          \"yd\"\n        ],\n        \"showWhen\": {\n          \"mode\": [\n            \"Measured stages\"\n          ]\n        }\n      },\n      {\n        \"key\": \"totalShrink\",\n        \"label\": \"Total wet-to-fired shrinkage (%)\",\n        \"value\": 14.5,\n        \"type\": \"number\",\n        \"min\": -50,\n        \"max\": 95,\n        \"step\": \"any\",\n        \"showWhen\": {\n          \"mode\": [\n            \"Known total shrinkage\"\n          ]\n        }\n      },\n      {\n        \"key\": \"inputStage\",\n        \"label\": \"Stage of the dimension you know\",\n        \"value\": \"Fired\",\n        \"type\": \"select\",\n        \"values\": [\n          \"Wet\",\n          \"Dry\",\n          \"Fired\"\n        ]\n      },\n      {\n        \"key\": \"dimension\",\n        \"label\": \"Dimension at that stage\",\n        \"value\": 100,\n        \"type\": \"number\",\n        \"min\": 0,\n        \"max\": 1000000000,\n        \"step\": \"any\"\n      },\n      {\n        \"key\": \"unit\",\n        \"label\": \"Dimension and output unit\",\n        \"value\": \"mm\",\n        \"type\": \"select\",\n        \"values\": [\n          \"mm\",\n          \"cm\",\n          \"m\",\n          \"in\",\n          \"ft\",\n          \"yd\"\n        ]\n      }\n    ],\n    \"input\": false,\n    \"live\": true,\n    \"presentation\": \"metrics\",\n    \"note\": \"Convert between measured wet, dry and fired sizes. Dry-stage conversion needs Measured stages mode. Use a test bar from the same clay and firing process. Changing units keeps the entered numbers. All calculations stay on your device. Download the report for formulas, assumptions and calculated values.\",\n    \"experience\": {\n      \"automatic\": true,\n      \"single\": false,\n      \"inputMaxLength\": 1000000,\n      \"inputMode\": \"text\",\n      \"label\": \"Your text\",\n      \"placeholder\": \"Type or paste your input…\",\n      \"help\": \"Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.\",\n      \"action\": null\n    },\n    \"mode\": \"automatic\",\n    \"interactive\": false\n  },\n  \"execution\": \"Browser interface\",\n  \"api\": null,\n  \"browser_agent\": {\n    \"supported\": true,\n    \"name\": \"run_current_tool\",\n    \"discovery\": \"WebMCP on the human page in a supporting browser\",\n    \"verification\": \"See audit/API-AUDIT.md; availability is not verification\"\n  }\n}\n```\n\n## Page guide\n\nConvert wet, dry and fired dimensions using measurements from your own clay test bar or a known total shrinkage rate.\n\nHow can we improve this tool?\n\nReport a problem or share an idea.\n\nPlease leave out private information. Your message and the tool name go to our team via PostHog.\n\n### How to use Pottery shrinkage calculator\n\n1. Enter the measured inputs and select their units.\n2. Review the calculated dimensions, counts and rounding.\n3. Download the result and verify it against a sample before making the full project.\n\n## Useful next steps\n\n- [3D print shrinkage compensator](https://happytails.ai/en/calculators/3d-print-shrinkage-compensator/) ([Markdown](https://happytails.ai/en/calculators/3d-print-shrinkage-compensator.md))\n\n- [Fabric shrinkage calculator](https://happytails.ai/en/calculators/fabric-shrinkage-calculator/) ([Markdown](https://happytails.ai/en/calculators/fabric-shrinkage-calculator.md))\n\n## Use a test bar from the same process\n\nEnter measurements from the wet, dry and fired stages of the same test bar. Select the stage of the dimension you know. The calculator shows the equivalent dimensions at the other measured stages.\n\n### Keep stage percentages separate\n\nA 100 mm wet bar that dries to 95 mm and fires to 85.5 mm has 5% drying shrinkage and 10% further firing shrinkage. The combined shrinkage is 14.5%, because percentages compound. Known total mode converts wet and fired dimensions only.\n\n### Save the calculation\n\nDownload a CSV of the results or instructions, a readable text report and a JSON report with values, formulas and assumptions. Calculations run locally on your device. Unit changes keep the numbers already entered, so check the selected units before using the result.\n"
}