How to fly tie the Kaufmanns Stone:
Hook: TMC 300 #2-10
Thread: 3/0 brown Monocord
Weight: Lead or Lead Free Wire
Tail: Brown Goose Biots
Rib: Black D-Rib
Abdomen: Brown Seal Fur Substitute (angora goat)
Wingcase: Vinyl cement coated turkey tail slips, cut to shape
Thorax: Same as abdomen
Antennae: Brown Goose Biots
Tie a piece of lead wire down each side of the hook shank.
Wrap about twenty turns of smaller lead over the hook shank on the front of the shank. Wrap the thread back and forth over the lead underbody to secure everything in place.
Bring the thread to the bend and dub a small ball of fur.
Tie in an opposed pair of goose biots at the bend of the hook on either side of the dubbing ball. Wrap forward over the butt ends to secure them and clip the excess.
Tie in a piece of D-Rib with the flat side up and wrap back over it to the bend.
Dub a robust tapered abdomen up to the seventy percent point.
Cut three coated slips from a turkey tail feather. These slips should be about as wide as the hook gap.
Notch the end of each slip as shown here. I notch the butt ends of the slips as they seem a bit more durable this way.
Tie the first slip in on the front edge of the abdomen so it overlaps back to nearly the midpoint on the shank.
Dub a portion of the thorax about halfway forward over the front end of the hook.
Overlap the thread onto the front edge of the thorax dubbing and tie in the second wingcase slip as you did the first. This slip should overlap the first one by about half.
Apply more dubbing and wrap it from the base of the second wingcase up to just short of the hook eye.
Tie in the last wingcase at the front edge of the dubbing. Clip the excess flush.
Tie in a short goose biot on either side of the hook eye. Clip the butt ends. Dub a small collar at the front of the fly, whip finish and clip the thread.
Pick out the dubbing along the thorax to simulate legs.