Free Browser-Based CAD/CAM for CNC & Laser Cutting — Design Swiftly

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Tutorials 6 min readApril 8, 2026

How to Turn a 2D Floor Plan into a 3D Room in Under 5 Minutes

Step-by-step walkthrough of Design Swiftly's Wall Tool and Extrude feature for architects and interior designers who want instant 3D visualization.

M
· CNC Specialist & Lead Developer
3D DesignArchitectureFloor Plan

Design Swiftly isn't just a CNC tool — it's a full architectural visualization platform. The Wall Tool and Extrude engine let you go from a blank canvas to a walkable 3D room model in minutes, with no 3D modelling experience required.

Step 1: Set Your Units and Canvas Size

Open the Settings tab on the right sidebar. Set your unit to mm (or cm for larger spaces) and your canvas size to match the room you're drawing — for example 6000 x 4000 mm for a 6×4m living room.

AI shortcut

Type "Create a 6x4m living room" in the AI Assistant (Gemini panel). Design Swiftly will place the walls, set units, and size the canvas automatically.

Step 2: Draw Walls with the Wall Tool

Select the Wall Tool from the tool palette. Click once to start a wall, click again to set its end point. The wall renders as a dual-line architectural wall with configurable thickness (default: 200mm).

  • Walls snap to 45° / 90° angles automatically if you hold Shift
  • Enter precise lengths in the coordinate input box (bottom of canvas)
  • Close the room by clicking back on the first point
  • Each wall segment becomes its own selectable layer item

Step 3: Add Furniture from the Library

Open the Library tab → Furniture section. You'll find 10+ sofa variations, beds, dining tables, coffee tables, and luxury tile patterns. Drag any item onto the canvas — it auto-scales to your project units.

You can also use the AI to add furniture: "Add L-shape sofa to bottom-left corner" or "Place a queen bed in the center".

Step 4: Extrude Walls into 3D

Select all your wall shapes. Press E (or choose the Extrude tool from the palette). A set of CAD-standard interactive handles appears:

  • Blue (Z) handle — drag upward to set wall height (e.g. 2400mm for a standard ceiling)
  • Red (X) / Green (Y) handles — expand the wall sideways (floor thickness, window reveals)
  • Live unit labels on each handle show the current dimension during drag, billboard-aligned so they're always readable during 3D orbit
  • Single-click a face to manipulate it independently; double-click to select the entire 3D object

Step 5: Align Shapes with the 3D Align Tool

To snap walls corner-to-corner, use the 3D Align Tool. Select two extruded shapes, pick the target face (Top, Bottom, or Side Wall), and click Align. Design Swiftly calculates the exact translation to make faces flush — no manual coordinate fiddling.

Step 6: Switch to Arch-Viz Viewer

Click the Arch-Viz tab (or press the 3D View button in the toolbar). The room loads in the high-fidelity React Three Fiber renderer with:

  • Lighting presets: Day (1500 lm), Noon (3000 lm), Night (ambient)
  • Dynamic shadows — toggle on/off for GPU performance
  • Orbit, Pan, and Zoom navigation
  • Movable light source with an intensity slider

The entire process — walls, furniture, 3D extrusion, lighting — runs completely in your browser. No plugins, no server processing, no cloud rendering queue.

Try it yourself →

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