Splicing on Siyah

Is there a best way to splice on a siyah?
I am going to be trying to make a bow based on Moshchevaya Balka/ hunnic bow and I plan to splice the siyah to the limbs, the plans I found here on the forum show a triangle splice, but not in very much detail.
Does anyone have any drawings or good pictures of a splice like this or any other kinds of splice? Or just a good description of how these splices should fit.

thanks,
Evan Painter