SheetMorph

Branches

A trunk dividing into two or more. Each of these opens in the browser with default sizes that already give a verified flat pattern: change them to yours, check the drawing, add seam and flange allowances, and export.

V-Piece

Breeches pieces: one round inlet dividing into two round branches, equal or unequal, level or angled.

• Equal branches
• Equal branches, angled
• Unequal branches

Y-Piece

A trunk dividing into two branches on flat miter cuts, symmetric or as a lateral, the branches of the trunk diameter or tapering to smaller ends.

• Equal branches
• Unequal branches

Twin Bend

A trunk dividing into two segmented bends that turn opposite ways: a bullhead at 90°, or any angle you give.

• Bullhead (90°)
• Angled branches

Twin Bend to Rectangle

A round trunk dividing into two segmented bends that turn opposite ways and change to rectangular duct as they turn: a bullhead at 90°, or any angle you give.

• Bullhead (90°)
• Angled branches

Three- or Four-Way

A round trunk that divides into three or four equal branches spaced evenly round it: a trifurcation or a four-way piece.

• Three branches
• Four branches

Rectangular Y

A rectangular trunk dividing into two rectangular legs side by side: a trouser piece, with equal or unequal legs.

• Equal legs
• Unequal legs

Rectangle to Two Rounds

A rectangular inlet that divides into two round outlets side by side, as two square-to-rounds on one dividing edge.

• Equal outlets
• Unequal outlets

Flat-Oval Tee

A round or flat-oval branch on the flat side of a flat-oval main: the main with its hole, and the branch cut to the main.

• Round branch
• Flat-oval branch