I have seen it done with a saw, It takes lots of skill and
In my youth I would always azure every opening behind every stone.
Some pave patterns demand a square grid, while others develop a
hexagonal honeycomb effect. Even a straight channel looks better
with azures, which could be square boxes or interlocking leaf
I always used a saw, working with the ring upside down. The trick is
to cut symmetric openings with just enough wall edge between them
while being aware of not cutting the opposite part of the shank with
your blade. It is inevitable that you cut the shank a few times, but
can be avoided with practice. There is a rhythm that is really
pleasing once you get started, and the demands of being attentive to
both the azure and the opposite edge of the shank is mentally
Now I do my azures digitally........much claener, and no nicking the
opposite part of the shank.
I assume all of you know that azure comes from the French 'a
jour'...referring to 'daylight'.....
Hope this helps,