I built an app that solves conduit bends with the real math instead of the cosecant tricks — Bend Aid

• Here's the problem: an offset is not a right triangle. A right triangle has three straight lines — an offset has two bends and a straight section. The cosecant method (multiplier × offset height) solves the hypotenuse of a triangle and calls it the distance between bend centers, but the bend is a curve, not a straight line. That's why gain happens in every bend, and why a big bend radius or a big angle means you end up fixing bends. It's not your fault — we were all taught tricks instead of the correct math, because the correct math is too complicated to do by hand.
• Bend Aid does the correct math. No cosecant, no charts, no correction factors. You measure where the conduit has to fit, enter your dimensions, and it gives you everything you need to lay out the stick:
• Conduit Length — total material needed
• Start Bend — first mark from the end of the conduit
• Travel — arc length of each bend
• Start To Start — distance from one bend mark to the next
• Bend Angle — it finds the smallest whole-degree angle that fits your run
• Tail — from the finish of the second bend to the entered length
• It solves the whole offset, start of the first bend to finish of the second bend. Because it solves the centerline, it works with any type or size of conduit.

What's in it:

• Right Triangles — enter any two of altitude, length, hypotenuse, or angle
• Offsets — single, rack, concentric, rolling, measured, plus 3-point and 4-point saddles
• Kicks — single, rack, concentric, and to-horizontal / to-vertical variants
• Nineties — single, rack, concentric, back-to-back, and back-to-back rack/concentric
• Find Bend Radius and a Chart Bender for figuring out what your bender will actually do
• Segments — break any bend's travel into equal-degree shots for segment bending
• Number formats: decimal, 1/16", 1/32", or millimeters — answers convert instantly when you switch
• Finding the smallest bend angle that fits matters for more than looks: shallower bends mean easier wire pulls, less strain on conductors, and fewer fittings and nipples.
• Every screen has its own help with a diagram, and the colored input fields match the colored sides in the diagram.