The shank seen from the side (top) and above (bottom). The treble hook should be one with a narrow eye of the tube fly type.
Dress the treble hook seperately with tag and butt. Prepare a short piece of 0.40-0.60 millimeter monofilament.
Align the monofilament with the eye of the hook.
Tie it on with a few wraps of black tying thread. Whipfinish, then glue or varnish.
Remove the treble from the vice and open the rear part of the shank slightly with a fingernail.
Pass the treble into the opening of the shank and towards its rear opening.
Pull the hook into the rear eye of the shank and lay the monofilament along the shank.
Put the shank into the vice and start overwrapping the shank and monofilament with tying thread. Glue or varnish and tie the rest of the fly.
Drawings by Martin Joergensen