Now I'm no Sofer by any means, although I do have a strong interest in the different Hebrew calligraphic traditions. All of which I find extremely beautiful in their own way.
While studying the style of K'thav Chabad, I couldn't help but notice that the Heh after Waw in the Tetragrammaton always slightly differs in appearance to the one preceding it.
If there are any Soferim (or just knowledgeable folk) who could enlighten as to why this is, I would be most grateful.