The time necessary to build up sufficient plate will vary with the solution used, the operating temperature and the current density used. In general most parts will acquire enough plate in 10 to 15 minutes. You can tell when you have enough plate simply by checking the part for only a second or two every few minutes. You should expect for the part to take on a dull nickel finish for a few minutes. Then the plate will slowly begin to become bright and mirror like. The mirror like areas will be spotty at first but will grow and finally merge together if the part was well polished. As soon as the part is as mirror like as you think it will become; take it out! If you continue to add plate, the finish will begin to get rough along the edges and at the point where the part is suspended.
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