Free tool

The Radial Quilting Planner.

Layered circles, spokes to the edge, one continuous walking-foot line. Drag the centre, add rings and split spokes to see the shimmer before you sew.

The Shimmering Headboard course — $45 CAD

Quilt sizeWidth: 80″Height: 80″

Tap anywhere on the quilt to place the centre, or drag the dot. Centre: 40″ × 40″.

Layers

Layer 1
Radius″Run all the way to the quilt edge
Spokes
12 spokes · 2π × 3.0″ = 18.8″ around
Layer 2
From radius A″Run all the way to the quilt edgeTo radius B″
Spokes
12 spokes · 2π × 10.0″ = 62.8″ around
Space evenly between all existing spokes
Layer 3
From radius A″Run all the way to the quilt edgeTo radius B″
Spokes
24 spokes · 2π × 20.0″ = 125.7″ around
Space evenly between all existing spokes

Walking-foot path Show the continuous path

Choose a layer above the quilt to watch that layer's path stitched, one at a time.

Spokes: 48
Stitching: 54.2 yd
Thread (×1.2): 65.1 yd
Time, roughly: 2.6 h

Stitching = every spoke + the travel along the edge + each circle. Time assumes about 15″ a minute with a walking foot plus a pause at each pivot — yours will vary.