Hola a todos!

[Grace]

@PepaCarro

I suppose that the formulas are used for the case of armhole curves, which are deformed when the size is changed.

Just for FYI and a start… This is a very good start to creating armhole and sleeve cap curves that resize beautifully:

Creating Smooth Curves: The Kolson Method

(I just called it the ‘Kolson Method’ here just to differentiate it from the ‘Sspencer Method’, etc.) (Mod Edit: As of January 2019, Keith put a more complete tutorial on the wiki: Creating Smooth Curves: The Kolson Method - Seamly2D) Based on my (somewhat limited) experience with V, here is what you need to watch out for: Always do curves last. They depend on control/reference points and lines that must be in place before you place your curves. It’s an issue with V itself, which needs to…

And then, if you have a look at my blog, I did a piece a year or two ago on how I use Variables where I show a few examples of formulas that I use as constant variables, that may help you.