newbie, wrap terminology

[betterthanyou]

I see people talking about 6/5 4/3 wraps. What does this mean? Thanks in advance

 

[Ozwald]

When you wrap a wire around a mandrel (drill bit, needle, whatever), you can count it 1 of 2 different ways. Start with the wire on top, wrap all the way around until it's on top again. That's 1/2 (or 2/1). Looking at the top you'll see 2 'wraps', but on the bottom there's only 1. Wrap it around again & you have 2/3 or 3/2. Another wrap is 3/4 or 4/3. It's just a way to prevent confusion. Typically when it's not specified as 2 numbers, it means the lower of the 2, meaning you started out with the wire on top & counted each time you came back around... like if I said I just did 7 wraps, I mean it's a 7/8 or 8/7.

 

[VaPreis]

Picture wrapping a wire around a wick.....at either end of the coil you wrap, there is only effectively a 1/2 of a wrap where the wire that will be attached to your atomizer leaves the wick. There is a half of a wrap at both ends of the coil.

So a 3/4 wrap is 3 full wraps in the middle, with the 1/2 wrap at the ends, for a total of 4.

I think it's just a nice way to differentiate how many full wraps a coil is when explaining it to others.