Spline Creator is a powerful Blender add-on for designing, editing, and exporting splines with ease. 

Create Bezier, NURBS, or Poly curves directly in 3D space, snap to surfaces, project points to planes, 

and trim interactively. With DXF R12 export support, customizable resolution, and intuitive plane-locking options, it’s built for precision workflows. 

Perfect for artists, engineers, and designers who need clean, flexible curve tools inside Blender.

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Spline Creator v1.43 – Update Summary ( 16-OCT-2026 )

1. New Unified UI

All tools are now grouped into a single main sidebar panel.

Replaced multiple panels with a cleaner accordion-style layout.

Sections include:

Sketch Plane & View

Create Curve

Edit Spline

Curve Analysis

Export

2. Enhanced Snapping System

New Snap Settings popup (S key).

Supports multiple snap modes simultaneously:

Grid / Increment

Vertex & Endpoint

Edge

Edge Midpoint

Curve Midpoint

Self-Snapping

Real-time visual snap indicators with color-coded feedback.

3. Dynamic Sketch Grid & HUD

New adaptive 3D sketch grid aligned to the active drawing plane.

Supports:

XY

XZ

YZ

VIEW

CURVE

Automatically hides Blender's default floor grid and axes while drawing.

On-screen HUD displays:

Grid size

Snap settings

Available hotkeys

4. New Drawing Hotkeys

Hotkey Function+ / - Increase or decrease grid size

Shift Angle snapping

V Align view to active curve plane

S Open Snap Settings

N Toggle Blender sidebar

Alt + Z Toggle X-Ray view

5. Live Curve Visualization

Real-time preview of:

Curve color

Bevel thickness

2D/3D fill settings

New Apply to Selected option for updating existing curves.

Show or hide control vertices (CVs) directly in Object Mode.

6. Advanced Curve Editing

Continue Curve

Extend an existing open spline from its endpoint.

Curve Smoothing

G1 continuity smoothing

G2 fairing algorithm with adjustable iterations

Vector Corner Protection

Preserve sharp corners during smoothing and rebuilding operations.

7. Curvature Analysis Tools

Added real-time Curvature Comb display.

Customizable:

Comb scale

Sample density

Line color

8. View & Shape Improvements

New view-flip tools:

Flip depth offset

Rotate view direction 180°

New global shortcut:

Shift + V → Align view to active curve

New rectangle drawing modes:

Center → Corner

Corner → Corner