How to Chrome Metal: DIY Guide

What You’ll Need

Safety gear: nitrile gloves, safety goggles, respirator mask
Metal part to be chromed (clean, rust-free)
Sandpaper (120, 220, 400, 600, 800, 1000 grit)
Degreaser or acetone
Electroplating kit (includes nickel and chrome solutions) OR spray-on chrome kit (e.g., Alsa Corp, Spray Chrome)
Distilled water
Clean, lint-free cloths
Rubber gloves and apron
Optional: polishing compound and buffing wheel

Step-by-Step

Prepare the surface. Remove any rust, paint, or old plating. Sand the metal starting with 120-grit, then progress to 220, 400, 600, 800, and finally 1000-grit for a smooth, even surface. The smoother the base, the more mirror-like the chrome.
Clean thoroughly. Wipe the part with a degreaser or acetone to remove all oils, dirt, and sanding residue. Any contamination will cause poor adhesion or blotchy plating.
Set up your workspace. Work in a well-ventilated area, away from open flames or sparks. Lay down protective covering. Put on your gloves, goggles, and respirator.
Apply the base layer (if using a spray kit). For spray-on chrome, apply a base coat (often black) as directed. This provides the dark background that gives the chrome its depth. Let it dry completely.
Spray the chrome solution. Using even, sweeping strokes, apply the chrome spray in thin, light coats. Hold the can about 8-12 inches from the surface. Build up the coating gradually, allowing each coat to dry per the manufacturer’s instructions. Usually 2-3 coats are enough.
For electroplating kits. If you’re using an electroplating kit, connect the part to the negative terminal (cathode) and the metal anode to the positive terminal. Submerge the part in the nickel solution first, then the chrome solution, following the kit’s voltage and time guidelines. The part will slowly take on a metallic finish.
Rinse and dry. After plating, rinse the part in distilled water to remove any residual chemicals. Pat dry with a lint-free cloth.
Polish (optional). Use a polishing compound and a buffing wheel to bring out the high shine. This step is often needed for a true mirror finish, especially with spray-on chrome.

Common Mistakes

Skipping surface prep. Rushing the sanding or cleaning leads to a dull, uneven chrome that peels.
Applying too much spray at once. Heavy coats cause runs and drips that ruin the finish.
Not using a base coat. Spray chrome needs a dark base to reflect properly; without it, the finish looks gray or hazy.
Contaminating the surface. Touching the part with bare fingers after cleaning leaves oils that prevent adhesion.
Ignoring safety. Chrome solutions contain hazardous chemicals. Always wear protective gear and work in a ventilated area.

Tips

Practice on a scrap piece of metal first to get a feel for the spray pattern and distance.
Work in a dust-free environment. A cardboard box with a hole cut for your hand can act as a spray booth.
For small parts, use a small spray can or a brush-on chrome kit for more control.
Let each coat dry completely. Rushing the process is the most common cause of a poor finish.
If you want a durable, industrial-grade chrome, electroplating is the better choice over spray-on.

Troubleshooting

Finish looks hazy or dull. This usually means the base coat wasn’t dark enough or the chrome was applied too thickly. Strip and redo, ensuring a proper black base.
Runs or drips. Sand the area with 1000-grit, clean, and reapply a thin coat. Avoid over-spraying.
Peeling or flaking. Indicates poor surface prep. Strip the part, sand thoroughly, clean with acetone, and start again.
Uneven coverage. You may have sprayed at an inconsistent distance. Use a steady, sweeping motion and keep the can parallel to the surface.
Electroplating not sticking. Check that the part is clean and the electrical connections are secure. Also, ensure the solution is at the correct temperature.

Frequently Asked Questions

Can I chrome plate plastic?

Yes, but you need to use a special plastic primer and a conductive paint if electroplating. Spray-on chrome kits can work directly on plastic after proper prep.

How long does spray-on chrome last?

Spray-on chrome is not as durable as electroplating. It can last years if sealed with a clear coat and not exposed to harsh conditions, but it will chip more easily than real chrome.

Is chrome plating expensive?

DIY kits range from affordable to moderate cost, depending on the size and method. Professional electroplating is much more expensive.

Can I chrome plate at home?

Yes, with DIY kits. However, electroplating requires careful handling of chemicals and a controlled setup. Spray-on chrome is easier for beginners.

What is the difference between chrome plating and nickel plating?

Nickel plating is often used as a base layer for chrome. Chrome provides the shiny, reflective finish, while nickel adds corrosion resistance and adhesion.

How do I remove old chrome plating?

You can sand it off, use a chemical stripper, or have it professionally removed. Sanding is the most common DIY method.

Sources: Alsa Corp. Menus and buttons can differ slightly by version. Spotted something out of date? Tell us.