Shield Size Planner
Pick a shape and a size class. Drag the sliders and the outline redraws on a 1-inch grid.
Core outline (cut line)
Finished edge with padding
0 in²
Small
Shape
Heater
Kite
Teardrop
Round
Oval
Coffin
Wankel (Reuleaux)
Rectangle
Target size
Free sizing (no target)
Max Small (3 ft²)
Max Medium (5 ft²)
Max Large (8 ft²)
Custom area
Custom area (in²)
Stay under the max by
Nothing (exact max)
0.5%
1%
2%
5%
Edge padding (in)
Reset this shape
Full-size pattern
Paper
US Letter (8.5 × 11 in)
A4 (210 × 297 mm)
Lines to print
Finished outline only
Core cut line, dashed finished edge
Print full-size pattern
Printing is blocked inside the Claude preview. Save the HTML file and open it in a browser to print.