One application lasts for 5-10 tools. Then re-impregnate the honing wheel with a few drops of oil and apply fresh honing compound. Work the honing compound into the leather. Do not let the compound dry, apply more oil if necessary.

1. When new, impregnate the leather with light machine oil. This will soften the leather and cause the honing compound to penetrate the leather.
2. Apply a thin string of the honing compound before starting the machine. Rotate the wheel by hand.
3. Start the machine and distribute the compound by pressing a tool gently against the wheel. Let the compound penetrate the leather.