Lug window filling

Our standard lug set at Signal is a nice no  window version that we buy from Richard Sachs. It's called the Rene Singer lug, and it is a very nice shaped lug that we do a little work to and use on most of our lugged bikes. We have been wanting to use a nice semi-sloping fork crown, but the casting that we have easy access to has a window, and it doesn't really match up with the lug visually. Here is a photo sequence of filling the window to get a crown that looks better with the windowless lug.