Page 187 - Barbara Merry - The Splicing Handbook

Work all the tucked wires up and as close as possible to the thimble. Seize the
area to prevent the wires from slipping or loosening (see page 127 for
instructions). Complete another round of tucks. Again, seize your work to keep
the wires in place. (Molly Mulhern)

In the next round of tucks, one wire will remain out, which accomplishes two
things: the splice will begin to taper, and one more round of tucks will be
completed. Complete the round of tucks, leaving the center wire (if there is one)
out of the splice. Do the last round of tucks. Cut the wires close and pound the
splice gently until you’re sure the cut ends don’t pop out.

Remove the seizing and check to see that the individual wire ends are cut
close. It might be necessary to smooth them further with a grinder or a side
cutter.
Serve the spliced area tightly.