diff --git a/.gitignore b/.gitignore
index 6060651d..fe498bf5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -90,4 +90,7 @@ package-lock.json
 .python-version
 
 # Claude Code local settings (created during development)
-.claude/settings.local.json
\ No newline at end of file
+.claude/settings.local.json
+
+# E3D development directory
+.e3d/
\ No newline at end of file
diff --git a/workflows/Calcslive/2058_Calcslive_Engineering_Calculations_Manual.json b/workflows/Calcslive/2058_Calcslive_Engineering_Calculations_Manual.json
new file mode 100644
index 00000000..8e26f6bd
--- /dev/null
+++ b/workflows/Calcslive/2058_Calcslive_Engineering_Calculations_Manual.json
@@ -0,0 +1,286 @@
+{
+  "name": "CalcsLive Demo Workflow Template",
+  "description": "Demonstrates @calcslive/n8n-nodes-calcslive custom node (https://www.npmjs.com/package/@calcslive/n8n-nodes-calcslive) that brings unit-aware physical quantities (PQ) and calculations to the n8n ecosystem in a composable manner. Example workflow with cylinder mass calculations.",
+  "nodes": [
+    {
+      "parameters": {},
+      "type": "n8n-nodes-base.manualTrigger",
+      "typeVersion": 1,
+      "position": [
+        -128,
+        -192
+      ],
+      "id": "c6331ca9-2a74-419e-a15f-a11e5f3c0583",
+      "name": "When clicking 'Execute workflow'"
+    },
+    {
+      "parameters": {
+        "articleId": "3M6UW7CQB-2AP",
+        "inputPQs": {
+          "pq": [
+            {
+              "symbol": "D",
+              "value": 200,
+              "unit": "mm"
+            },
+            {
+              "symbol": "h",
+              "value": 20,
+              "unit": "cm"
+            }
+          ]
+        },
+        "outputPQs": {
+          "pq": [
+            {
+              "symbol": "A",
+              "unit": "m^2"
+            },
+            {
+              "symbol": "V",
+              "unit": "m^3"
+            }
+          ]
+        }
+      },
+      "type": "@calcslive/n8n-nodes-calcslive.calcsLive",
+      "typeVersion": 1,
+      "position": [
+        128,
+        -80
+      ],
+      "id": "c22f212e-52ef-4d4f-b398-0bd4f2250705",
+      "name": "Cylinder Calcs: (D, h) => (A, V)",
+      "credentials": {
+        "calcsLiveApi": {
+          "id": "REPLACE_WITH_YOUR_CALCSLIVE_CREDENTIAL_ID",
+          "name": "Your CalcsLive API Credential"
+        }
+      }
+    },
+    {
+      "parameters": {
+        "articleId": "3M6UW7CQB-2AP",
+        "inputPQs": {
+          "pq": [
+            {
+              "symbol": "d",
+              "value": 360,
+              "unit": "km"
+            },
+            {
+              "symbol": "t",
+              "value": 10,
+              "unit": "h"
+            }
+          ]
+        }
+      },
+      "type": "@calcslive/n8n-nodes-calcslive.calcsLive",
+      "typeVersion": 1,
+      "position": [
+        336,
+        -288
+      ],
+      "id": "9b8cc0ea-d130-48a3-8552-4346f20a5ad0",
+      "name": "Speed Calc: (d, t) => v",
+      "credentials": {
+        "calcsLiveApi": {
+          "id": "REPLACE_WITH_YOUR_CALCSLIVE_CREDENTIAL_ID",
+          "name": "Your CalcsLive API Credential"
+        }
+      }
+    },
+    {
+      "parameters": {
+        "articleId": "3M6VLSBHB-3HT",
+        "inputPQs": {
+          "pq": [
+            {
+              "symbol": "ρ",
+              "value": 1000,
+              "unit": "kg/m^3"
+            },
+            {
+              "symbol": "V",
+              "value": "={{ $json.data.calculation.outputs.V.value }}",
+              "unit": "={{ $json.data.calculation.outputs.V.unit }}"
+            }
+          ]
+        },
+        "outputPQs": {
+          "pq": [
+            {
+              "symbol": "m",
+              "unit": "kg"
+            }
+          ]
+        }
+      },
+      "type": "@calcslive/n8n-nodes-calcslive.calcsLive",
+      "typeVersion": 1,
+      "position": [
+        336,
+        -80
+      ],
+      "id": "5bf3e5ab-d1f6-42e7-9e64-b4b78bcbfa99",
+      "name": "Mass Calc: (ρ, V) => m",
+      "credentials": {
+        "calcsLiveApi": {
+          "id": "REPLACE_WITH_YOUR_CALCSLIVE_CREDENTIAL_ID",
+          "name": "Your CalcsLive API Credential"
+        }
+      }
+    },
+    {
+      "parameters": {
+        "assignments": {
+          "assignments": [
+            {
+              "id": "a026dc84-665f-4898-8de9-ccdbaa530bfa",
+              "name": "Distance",
+              "value": 360,
+              "type": "number"
+            },
+            {
+              "id": "de7d6d3e-151c-4390-b2d9-bf78da0159eb",
+              "name": "DistanceUnit",
+              "value": "km",
+              "type": "string"
+            },
+            {
+              "id": "49c1e979-a0c2-403e-bed1-ef28eb8513ad",
+              "name": "Time",
+              "value": 2,
+              "type": "number"
+            },
+            {
+              "id": "54ae6f42-844f-4bf2-b6d3-a6e159d46e9e",
+              "name": "TimeUnit",
+              "value": "h",
+              "type": "string"
+            }
+          ]
+        },
+        "options": {}
+      },
+      "type": "n8n-nodes-base.set",
+      "typeVersion": 3.4,
+      "position": [
+        128,
+        -288
+      ],
+      "id": "8b83b9e5-d7a4-4f74-b5bc-e6012a0f606a",
+      "name": "Fields: (d, t)"
+    },
+    {
+      "parameters": {
+        "sendTo": "user@example.com",
+        "subject": "CalcsLive Calculation Results",
+        "message": "=Hello!\n\nThis is an automated email from your n8n workflow using @calcslive/n8n-nodes-calcslive.\n\nCalculation Results:\n- Total Physical Quantities: {{ $json.data.calculation.totalPQs }}\n- Mass Result: {{ $json.data.calculation.outputs.m.value }} {{ $json.data.calculation.outputs.m.unit }}\n\nBest regards,\nYour CalcsLive Workflow",
+        "options": {
+          "attachmentsUi": {
+            "attachmentsBinary": []
+          }
+        }
+      },
+      "id": "2b48a81e-84f8-439d-aa58-6cc7b1c00480",
+      "name": "Send Email",
+      "type": "n8n-nodes-base.gmail",
+      "typeVersion": 2.1,
+      "position": [
+        528,
+        -80
+      ],
+      "credentials": {
+        "gmailOAuth2": {
+          "id": "REPLACE_WITH_YOUR_GMAIL_CREDENTIAL_ID",
+          "name": "Your Gmail Account"
+        }
+      }
+    }
+  ],
+  "pinData": {},
+  "connections": {
+    "When clicking 'Execute workflow'": {
+      "main": [
+        [
+          {
+            "node": "Fields: (d, t)",
+            "type": "main",
+            "index": 0
+          },
+          {
+            "node": "Cylinder Calcs: (D, h) => (A, V)",
+            "type": "main",
+            "index": 0
+          }
+        ]
+      ]
+    },
+    "Speed Calc: (d, t) => v": {
+      "main": [
+        []
+      ]
+    },
+    "Mass Calc: (ρ, V) => m": {
+      "main": [
+        [
+          {
+            "node": "Send Email",
+            "type": "main",
+            "index": 0
+          }
+        ]
+      ]
+    },
+    "Fields: (d, t)": {
+      "main": [
+        [
+          {
+            "node": "Speed Calc: (d, t) => v",
+            "type": "main",
+            "index": 0
+          }
+        ]
+      ]
+    },
+    "Cylinder Calcs: (D, h) => (A, V)": {
+      "main": [
+        [
+          {
+            "node": "Mass Calc: (ρ, V) => m",
+            "type": "main",
+            "index": 0
+          }
+        ]
+      ]
+    }
+  },
+  "active": false,
+  "settings": {
+    "executionOrder": "v1"
+  },
+  "meta": {
+    "templateCredsSetupCompleted": false
+  },
+  "tags": [
+    "calculation",
+    "calculator",
+    "math",
+    "engineering",
+    "unit-conversion",
+    "unit-converter",
+    "unit-aware",
+    "unit-awareness",
+    "physics",
+    "formula",
+    "computation",
+    "measurement",
+    "custom-node",
+    "PQ",
+    "physical-quantity",
+    "integration",
+    "composable"
+  ]
+}
\ No newline at end of file