More to Nightblood's creation?

[Circumlocutions]

Is it possible for a dawnshard to be involved with Nightblood's creation?  Could Shashara held a Dawnshard to help her visualize the creation?  We see Vivenna's sword and it seems to do the same color draining thing, but not leaking investiture or whatever.  Is that due to a different command or the lack of a dawnshard involvement?

But while Nightblood is incredibly powerful, at the same time he doesn't seem like Dawnshard powerful.

[Trusk'our]

1 minute ago, Brightness Windrunner said:

Is it possible for a dawnshard to be involved with Nightblood's creation?  Could Shashara held a Dawnshard to help her visualize the creation?  We see Vivenna's sword and it seems to do the same color draining thing, but not leaking investiture or whatever.  Is that due to a different command or the lack of a dawnshard involvement?

But while Nightblood is incredibly powerful, at the same time he doesn't seem like Dawnshard powerful.

I believe that the reason why Vivenna's blade doesn't leak is because it doesn't have nearly the amount of investiture held within it as Nightblood. Nightblood leaks because he is holding more investiture than he can handle, so it leaks out. 

Can't say for certain about the whole dawnshard thing though.