Will Purple Power Or Something Else Remove Car Chrome? in Model Building Questions and Answers Posted Saturday at 01:43 PM Chromed plastic car parts are electroplated using methods similar to chrome plating metal. First plastic is coated with electrically conductive lacquer, then it is copper plated, then finally with Chromium. There might also be another metal used between copper and chromium. Except for the conductive lacquer step, this is the same process using for metal parts. Chromium is a very though metal resistant to strong chemicals. I doubt that purple power (or any Lye-based products) will have any effect on it. Model car parts aren't actually chrome plated by vacuum-metalized using very thin layer of aluminum. Aluminum is a soft metal which Lye-based products can easily dissolve. However some diecast models, and few kits (made by Trumpeter) for their plastic chromed parts uses a similar electroplating process used for real cars. Those were pretty much impossible to strip using any chemical methods used for other typical vacuum-metalized "chrome" kit parts.