i just bought a 20 yrs old cymbals, grabe sobrang kulay brown na siya sa sobrang kalumaan,
1st i used a metal polish and brushed it with a steel brush, and nawala yung color brown nya,
after that i used a driller + a buffing compound
after that pinunasan ko siya ng basahan na may thinner
and presto parang brand new na ulit yung cymbals =)