The article explains how to remove the heavy-duty rust preventative coating (Cosmoline) from machine metal surfaces using safety gear, cleaner/degreaser, and optional plastic scrapers. It advises soaking, scraping, and wiping repeatedly, then applying a metal protectant to prevent rust. For light rust, WD-40 and scuff pads work, and products like Slip It or Johnson’s Paste Wax help prevent rust. Tips include wiping after use, avoiding damp storage, and periodic recoating.
We’re often asked two important questions:
“How can I clean off the protective coating on my machine?”
“How can I clean my machine and prevent or remove rust?”
Why There’s a Protective Coating
The unpainted metal surfaces on your machine are coated with a heavy-duty rust preventative (Cosmoline) to protect against corrosion during shipment and storage. While this coating is highly effective, it does require some effort to remove. Taking the time to clean it properly will help you understand how to care for your machine and keep it in top condition.
What You’ll Need
- Disposable rags
- Cleaner/degreaser (WD-40 works well)
- Plastic paint scraper or plastic razor (optional)
- Safety glasses
- Disposable gloves
Tip: Always use cleaning products in a well-ventilated area and follow all safety instructions provided by the manufacturer.
Removing the Rust Preventative (Cosmoline)
- Put on safety glasses and gloves.
- Spray the coated surfaces with a liberal amount of cleaner/degreaser.
- Let it soak for 5–10 minutes.
- If the coating is thick, allow a longer soak or repeat the process multiple times.
- Before soaking, you can scrape off excess Cosmoline using a plastic scraper or razor to make cleaning easier.
- Wipe off the loosened coating using rags.
- Repeat as needed until the surface is clean.
- Apply a quality metal protectant to all unpainted surfaces to prevent future rust.
Removing and Preventing Rust
- Light surface rust can usually be removed with:
- A spray oil (like WD-40)
- A Scotch-Brite pad or other scuff pad
- To prevent rust and improve work surface glide, apply:
- Slip It
- Talcum powder
- Johnson’s Paste Wax
These rust prevention products are often available at local hardware stores.
Extra Tips
- Wipe down your machine after each use to remove moisture and dust.
- Avoid storing your machine in damp or unheated spaces.
- Reapply protective coatings periodically for long-term care.
- For stubborn Cosmoline, multiple soak cycles and scraping will speed up the process.
Check out the video below for further tips as well.