Square-to-Round (STOR) is a software application to design square-to-circle transformers. Within the construction industry, tradesmen and especially sheet metal workers need to know how to construct a square-to-round. Square-to-rounds are often used for hoppers, stove chimney hoods and HVAC pipe work systems.

Square-to-rounds are everywhere - you'll never notice them unless you're looking for them. Geometrically I am talking about a 3D body that transforms from a square to a round: table legs, hanging baskets, lamp shades, bottle necks, heating, ventilation and air conditioning, and duct work. The program allows you to type in the minimum of geometric information to be able to draw a square to round surface flattened out onto a 2D plane. The program also exports suitable 3D geometry for games engines, web graphics, and CAD operators.

You can find more information at:
www.tyharness.co.uk/squaretoround/squaretoround.htm Segmental Bend (SEGB) is not just an alternative method to the manual drawing of patterns but an engineering tool to help design the transformations. You can control key geometrical parameters and perform advanced calculations like finding the internal volume of a bend. SEGB is not only designed for the typical 6 segment bend but for a 1 segment branch piece, 2 segment elbows, 3 piece return elbows or even a 25 segment ornamental toroid. Crucially, the software allows you to evaluate an oblique vs. a right segmental bend for you particular application.

The segmental bend is often used for HVAC duct work. Often you will be able to buy off the shelf bends made up for all the common diameters and various angles like 30,45,60 and 90 Deg. but it's important to be able to design a make a bend of unusual dimensions.