Rectangular duct bend, radiused: flat patterns
A rectangular duct turns in plan round a radius, at whatever angle the run needs, with a straight at each end. The top and the bottom are cut to the bend; the two sides are flat sheets pressed in facets round it, each press line marked.
A rectangular duct turning in plan round a radius, at any angle, the height the same all along; four plates, the sides pressed in facets.
Sizes you enter
- Width (W): Across the duct, seen from above, on the surface chosen under Sheet.
- Height (H): Across the duct, seen from the front, the same all along.
- Radius (R): Of the bend's centre line, more than half the width.
- Bend angle (A): How far the duct turns, more than 0° and less than 180°.
- Straight, first end (E1): Straight run before the bend. 0 for none.
- Straight, second end (E2): Straight run after the bend. 0 for none.
What you get
The exact flat pattern of the part, worked out for the sheet thickness measured on the inside, the mean or the outside, with numbered press lines, the part in 3D, its weight and cutting length, and a DXF for laser, plasma or waterjet cutting (STEP as well).