How do you guys finish tying off the end of the wrap when tying on feathers? Any special technique?

Thanks, Robert

I use a serving knot. the knot has not failed me yet.

I use a serving knot as well with string.  If you use sinew, it will adhere to itself no need to tie a knot.

please tell me what a serving knot is??
you can wrap over a loop and then pull it under

2 half hitches and a bead of glue. Jawge

Not sure what you call this but it works great.
Start with a loop at the end you are wrapping toward, leaving enough on the opposite end to grab when ready. Make your wraps, then run the loose end through the loop. Pull other end, pulling loop and tag end through the wrap. Cut off excess.