As a fabricator of 40+ years, the last 30 or so as the workshop manager, I have constantly used trigonometry etc. to calculate cones, segmental bends and much more. Nowadays I am constantly asked by the fabricators to calculate developed lengths etc. to save them the time and effort of laying it out. I have developed this app so that they can do it for themselves and therefore save “MY TIME”.

This app calculates the true developed line lengths of oblique or true cones of any size or thickness in millimeters or inches. Simply enter the cone details and press develop. The time saved is immeasurable, no full size plan view layouts to do for determining the true plan view base lengths, no laying out of base lengths against the vertical height to determine the true lengths, just the click of a button and you are ready to mark out straight onto the flat plate material..