UFO parametric cutter — metric (mm)

Interactive single-file generator: enter sizes (mm), adjust panels, and see preview + flat panel shapes and counts. Material thickness fixed to 5 mm (foam board) — suitable for hand-fitting and taping.

Source code available on GitHub | Inspired by Manning Makes Stuff's 48in Flying Saucer

Small diameter (mm) - top cap only

Main outer diameter (mm) - cone transitions

Main inner diameter (mm) - cylinder walls

Total height (mm) - calculated from sections

Top cone height (mm)

Main upper cone height (mm)

Cylinder height (mm)

Main lower cone height (mm)

Small-top panel count (N)

Main-ring panel count (N)

Hole diameter for windows (mm)

Panel divider color

Small-top cone color

Main upper cone color

Cylinder color

Main lower cone color

Views update automatically as you change values.

Units:

Top-down

Side view

Unique flat shapes and counts

Shape	Count	Dimensions (mm)

The small-top panels are triangular/trapezoid; main panels are trapezoids.