Hi

**Maha,**You need to know what the circumference of the cylinder is to start with, simple maths. (dia x pi)

Then, whatever that measurement is dictates what length your wrap sketch should also be.

I would the design my curves so that both the start an end points of the curve are on the horizontal centreline so that when it is wrapped they will meet in the middle.

Dave.

The circumference of the cylinder you have calculated by Dia*PI. Then you need to make the length of the sinusoidal series equal that circumference and then make sure that length contains an integer number of periods of your sinusoid. Either that of take the length of your integer number of sinusoidal periods and make the circumference equal to that (and therefore the diameter = C/PI).

I'm about 53 years removed from my high school math but I did have some fun reminiscing with this Maha. However I wasn't able to pinpoint the exact reason that this works. Hopefully someone will be able to clue us in on how this should be figured.

This is a screenshot of what it produces.