• How To Remove Chrome Plating From Plastic Car Parts
• Dechroming

Depending on the manufacturer, the stripping process can take a few minutes or a few hours, which is generally no sweat since you will be building that 426 Hemi while waiting for the valve covers to de-chrome. Get an airtight container, such as a prescription bottle. Get the chemical for stripping the chrome.

Perform a reverse electroplating.

How To Remove Chrome Plating From Plastic Car Parts

Chrome is affixed to metal through the process of electroplating, in which electric current is used to bind chrome to the metal at a molecular level. By reversing this process, chrome plating can be removed extremely effectively. However, doing so can be extremely dangerous. Not only does the process involve a live electric current, but also produces several toxic, carcinogenic chemicals as products of the reaction. Hexavalent chromium, for instance, is one extremely dangerous product.^[3] Thus, this process is best left to professionals - the steps below are for informative purposes only.

Dechroming

• Mix chromic acid and sulfuric acid in water in an approximately 100:1 ratio. For example, you may add 33 oz. (936 grams) of chromic acid crystals and .33 oz. (9.36 milliliter) of sulfuric acid fluid to distilled water to make 1 gallon (3.79 liter). Mix solution in a proper immersion tank used for electroplating, materials testing, and/or chemical treatments.
• Heat the solution. Keep the temperature of the solution from 95 to 115 degrees Fahrenheit (35 to 46 degrees Celsius) for decorative chrome. Keep temperature from 120 to 150 degrees Fahrenheit (49 to 66 degrees Celsius) for hard chrome.
• Run a negative charge from a DC power source through the chromic plating solution via wire.
• Attach the positive cathode to object intended for stripping and submerge the object into the solution. The positively charged exterior chrome metal will be pulled from the object.
• Rinse object in agitating running water, then rinse again. Have waste products professionally processed and disposed of.