Clove oil is available in one ( maybe two ) ounce bottles at your local pharmacy but is usually kept behind the counter and you have to ask for it. Any large superstore should carry the Kama Sutra "Aromatic Massage Oil" in the personal care/cosmetics section. If you live with a significant other it is recommended two bottles be purchased, one for cutlery to which the clove oil is added, and one for other purposes.
Initially apply straight Kama Sutra oil to leather. Pour ( or use a small brush ) to apply clove oil directly to wood inside scabbard. When both leather and wood have absorbed about enough ( don't use more than half the clove oil ), wrap in plastic wrap or baggie for at least a day. Leave in warm place.
Mix Choji Sutra oil.
Start with 6 oz Kama Sutra oil and add a few drops of clove oil and shake until pleased with the result. Do not go over one half oz clove oil ( 12 to 1 ratio ).
There you go, Buoy.