Stone Manufacturing & Supply Company, Inc. Henderson Castrating Tool

Attach the Henderson Castrating Tool securely in a standard, variable speed electric drill, preferably a cordless style, for safety and convenience. It is essential that only a variable speed drills with a 3/8″ chuck is used and that the castrating instrument be tight and secure in the drill chuck. Important: Tighten the instrument with a drill chuck tool; hand tightening is not adequate.

Open the scrotum, or sac, with a Newberry knife. With one hand, move the testicles high in the sac and slit the sac side-to-side at least halfway up.

Testicles will then drop down. With the testicles exposed, grasp a testicle in one hand while using the other hand to push the sac upward, exposing 3 to 4 inches of cord. With one hand holding the tool and drill and the other hand holding the testicle, clamp the plier of the Henderson Tool across the entire cord, just above the large portion of the testicle.

Place the ‘flat’ side of the testicle toward the tool so the testicle will not ‘flop’ excessively while the tool is twisting the cord. With slight tension on the drill, and with the tool and drill in a straight line with the cord, hold the cord loosely between the fingers just above the clamp of the tool to keep the cord centered while twisting.

Begin rotation very slowly; then let the speed increase slowly with slight tension on the cord. The testicle will be removed after approximately 20 turns of the tool. The cord will be severed by the twisting action. The twisted end of the remaining cord will substantially reduce bleeding through the severed cord.

Use the same procedure for removing both testicles. Use spray to control flies and administer a tetanus vaccine.