3D House Modeling Workflow (Basic Structure)
📌 The process begins by opening a 2D floor plan that includes furniture and utility layouts, and then setting up the basic environment.
📐 Essential initial steps involve deleting the coordinate system and moving the origin point to the desired location (using the UCS icon and selecting "No Region").
🧹 To focus on wall creation, layers are used to hide unwanted elements like columns, furniture, and doors/windows temporarily.

Creating 3D Walls and Heights
⚙️ Before extrusion, the view must be set to South East Isometric and the Conceptual visual style is applied for better viewing.
⬆️ The UCS Z-axis vector is adjusted upwards to prepare for vertical wall creation, followed by selecting the dedicated 3D Wall layer.
🧱 The Presspull command is used on the wall outlines. The desired color must be set to "By Layer" (by pressing Ctrl+1) before pressing and pulling to the required height of 3 meters (or adjusting based on region).

Defining Openings (Doors and Windows)
🚪 Once initial walls are created, layers for doors and windows are used to isolate and manipulate these openings.
📏 Specific sill heights are applied using the Presspull command based on the function of the opening: 0.9 meters for standard windows, 1.5 meters for toilet ventilation, and 1.2 meters for kitchen sliding windows.
🔄 All separate wall extrusions are unified using the Solid Union tool to merge them into single, continuous wall bodies.

Constructing Slabs and Floors
🏗️ A new layer named "Plinth" (or similar for floors/slabs) is created for the slab elements, usually colored white initially.
👣 The plinth outline is traced using the Polyline tool, ensuring the Selection Cycling feature is active when dealing with multiple overlapping entities (3D lines vs. polylines).
⬇️ The resulting plinth polyline is Offset by 0.5 units externally and then Extruded downwards by 0.6 meters. This plinth must then be moved up by 0.6 meters to sit correctly on the ground plane relative to the plan base.

Incorporating Structural Elements and Openings
⚙️ Staircase cutouts are handled by copying the plan, defining the area to be removed with a Rectangle, Extruding it (e.g., for depth), and then using the Subtract tool on the slab/floor to create the opening.
🧱 Columns (sized approximately 0.45 x 0.23 meters with variable height) are modeled as boxes and strategically copied and placed based on structural needs.
🔗 After creating railings, slabs, columns, and walls, they are merged using the Solid Union command to create a single, unified structure, preparing the model for detailing like glass panels.

Key Points & Insights
➡️ Layer management is crucial for efficient 3D modeling, allowing easy toggling (hiding/showing) of elements like columns, furniture, and openings.
➡️ Use the UCS manipulation tools (moving the origin) and Isometric views before starting vertical extrusion work for accurate wall placement.
➡️ For complex assembly, use the Solid Union tool frequently to merge separate extruded volumes into single clean objects, and Subtract for creating openings like stairwells.
➡️ Save frequently after completing major steps (like finishing walls or slabs) to prevent losing work due to unexpected interruptions.

📸 Video summarized with SummaryTube.com on Nov 26, 2025, 15:03 UTC