How to keep a bare metal car from rusting

This blog post will answer the question, “how to keep bare metal cars from rusting” and covers topics like how to fix rust on bare metal cars, different ways of removing rust, and frequently asked questions.

How to keep a bare metal car from rusting?

To keep a bare metal car from rusting, follow the steps given below:

  • Utilizing water, a towel, and a scrubbing brush, remove dirt and rust chips from the surface of the car. 
  • A paint thinner or a mixture of baking soda and water will also help. 
  • To avoid future corrosion, let the surface cure completely before fixing the rust. 
  • To cure the rusting, use as much clear coat as necessary.

How to fix rust on the bare metal car?

Car rust treatment isn’t difficult, but it takes a lot of time (mostly waiting for primer and paint to dry between steps). Materials such as sandpaper, primers, masking tapes, and poly coating, as well as a clean sponge, polishing compound, touch-up paints, and topcoat, should cost around $150. 

To treat the most frequent rust stains on the bonnet and windows, choose a quiet, cloudy day and shut out all the entire day. Automobile touch-up paints come in liters and quarts and can be applied with a spray nozzle, aerosol sprays, or sliding applicators. 

Combining automobile paints with a reducer to meet the humidity and temperature levels can be challenging even if you understand how to use a sprayer. It is not something we encourage. Rather, choose squirt bottles for larger fixes and roller ball atomizers for scrap removal.

Steps of removing bare metal rust are given below:

  • Protect the rust-repair area on your car by masking it off
  • Get rid of the rust
  • Disinfect with detergent
  • Surface preparation by using primers
  • Sand the primer surface
  • Apply a base coat
  • The clear coat is sprayed on.

Now I will elaborate on the guidance given above.

Protect the rust-repair area on your car by masking it off:

Poly sheeting will shield the entire car from paint splatters. Lay a poly sheet over the engines and fender if you’re painting the bonnet. Trim poly sheet to fit the door to open and attach it to the frame in doorway regions. To integrate the touch-up paints into the good parts, the ultimate covering has to be a yard or two away from the repaired region.

Material NeededTool Needed
Poly SheetingScissor

Get rid of the rust:

Steps of removing rust:

  • With a scrubber, remove any cracked paintwork. Next, with 40-grit sandpaper, remove the corrosion back to bare metal, scratching through the corrosion patches. 
  • Then make the sanding area bigger so you can feather the borders. 
  • Now, with 120-grit sandpaper, remove the painted borders. 220 grit is used to finish the feathering. Clean debris from the exposed area with a clean wipe. 
  • If the corrosion has produced holes in the metal, fix them with body filler now or wait until the resin primer has dried before applying numerous layers of filler primer.
Materials NeededTools Needed
Body FillerScrubber
SandpaperRags

Disinfect with detergent:

Steps of disinfecting:

  • Using a lube-cutting cleaning detergent and clear rinsing water, wash the entire uncovered area. 
  • Allow time for it to dry. Clean the area with a clean cloth once more to eliminate any leftover dirt or fuzz. 
  • Use the prep solution recommended by the paint supplier.
Materials Needed
Detergent 
Water

Surface preparation by using primers:

Steps of applying primers:

  • Use epoxy primer first, followed by filler priming. Filler primer should be sprayed in thicker applications to completely cover the restoration region. 
  • Integrate the can into the surrounding painted region by moving it gently away from the surface. 
  • Use an epoxy primer as your initial layer to ensure a solid connection to bare metal. 
  • Allow the indicated waiting period on the package (typically 15 mins) between applications when spraying 2 to 3 moderate coats. 
  • Allow an hr for the epoxy to dry to the contact (or longer if the weather is damp).
  • Soak 1,000-grit sandpaper is used to grind the adhesive primer. Allow drying after washing with clean water. 
  • Clean the cured resin primer clean with a cloth before applying 2 to 3 layers of lacquered filler primer, leaving time for each application to dry. 
  • Allow at least 1 hour for the lacquered primer to harden to the touch before sanding.
Materials Needed
Epoxy Primer
Sandpaper
Clean Water
Tools Needed
Spraying Bottle
Wipes

Here’s the top-recommended Epoxy Primer:

RAPTOR 4:1 Anti-Corrosive Epoxy Primer Kit UP4831 Gray 1L

Why should you buy this primer?

This Epoxy Primer has the following properties:

  • It’s made with a unique combination of anti-corrosive chemicals to prevent rust, and it’s also resistant to salt spray.
  • It’s possible to use it straight on rusty surfaces.
  • It’s possible to use it wet on wet.

Sand the primer surface:

Using 30-grit sandpaper, remove spills and droops. Then smooth the whole repaired area to a clean texture. Level the primer and buff the corners with damp 500-grit sandpaper. Then smooth the whole repair, such as the merged areas, with damp 800-grit paper.

Materials Needed
30-grit Sandpaper
500-grit Sandpaper
800-grit Sandpaper

Apply a base coat:

Steps of applying base coat:

  • Place the colorful base coat on top of the white undercoat. Start from the bottom of the patch and spread the colored coat in left-to-right lines. 
  • Wait 10 minutes among coats while you apply the color to the patch and nearby region in 2 to 3 layers. 
  • Mist the repaired region while keeping the spraying can approximately 12 inches away from the patch. 
  • The nicer the colored coat looks under the gloss finish, the slower you work up. 
  • Let the base color cure for at least 30 min, or until it is extremely dry. Unless you’ve caused droops, don’t remove the base coat (particularly metallic hues). 
  • In that instance, gently dust the encountered areas before repainting them.  
Material NeededTool Needed
Base Color CoatSpraying Bottle

Here’s a highly recommended base color coat:

VHT SP453 Anodized Base Silver Color Coat Can – 11 oz.

Benefits of this product:

  • In 30 minutes, it is dry to the touch.
  • Overnight dries completely
  • There’s no need to cure
  • Offers a coating system with many high-performance layers.

The clear coat is sprayed on:

Steps of applying clear coat:

  • Apply numerous applications of clear coat, giving enough time for each coat to dry. 
  • To obtain a seamless merge line, slowly build the clear coat into the adjacent painted regions. 
  • This is the most difficult stage since all clear coatings run quickly, ruining the appearance of your paint scheme. 
  • If you make a break in the clear coat, probably wait two days before trying to repair it with sandpaper and buffing solution. 
  • After that, you’ll need to repaint the sanded region. Then get a sense of the nozzles and the pace of distribution by spraying on a small piece of card.
  • Hand-buff the mended area with a cotton cloth or fiber towel and cleaning solution. 
  • This procedure should not be done with a buffing machine. Before waxing, probably wait 1 month.
Materials NeededTools Needed
Buffing CompoundsCotton cloth
Cleaning SolutionSprayer

Here’s a top recommended Buffing Compound:

3D One – Car Scratch & Swirl Remover – Rubbing Compound & Finishing Polish 

Benefits of this product:

  • For smaller contact areas, 3D One could be applied by hands; for larger spaces with more defects, a sander or buffer can be used.
  • 3D One is a one-step scrape and ripple remover with a sealant coating that can give your paintwork a true makeover and keep it alive.

Different ways to protect the bare metal cars from rusting?

There are several common methods for protecting bare metal from rusting, two of those are given below:

  • Topping with powder
  • Store Properly

I will now elaborate on the guidance given above:

Topping with powder:

Powder coating metal surfaces can help prevent them from rusting.

However, while powder-coating offers long-term durability, it is not impervious to the effects of the weather. As a result, while powder-coated metal does not rust, it can deteriorate if the powder coating dissolves.

Benefits of powder coating:

  • The powder coating produces a layer that prevents rust and other sorts of deterioration. Powder coating creates a strong barrier that prevents the metal from rusting.
  • Powder coating on practically any sort of metal provides customers, organizations, and corporations with one of the most cost-effective and long-lasting finishes available. 
  • Powder finishes are more resistant to cracking, peeling, and discoloration.

Store Properly:

Why proper storage is compulsory:

  • The most obvious method of preventing corrosion is to protect the item away from moisture. 
  • Corrosion is formed when water reacts with iron, hence a dry atmosphere will not produce rust. 
  • Keep in mind, however, that even dry air contains moisture in the form of humidity. 
  • You’d need an air and water-tight seal to totally avoid corrosion. 
  • Of course, this would make the device impossible to use, therefore preventing rust during storage or shipping makes more sense.

Frequently Asked Questions:(FAQs), “How to keep the bare metal car from rusting?”

Can you clear coat a bare metal car?

A strong clear resin will only stick to metal surfaces if it is cleaned regularly, and I recommend applying an etching liquid to aid adherence. You can find transparent epoxy from a variety of suppliers; all you have to do is look around to discover what’s accessible in your location.

How do you seal bare metal?

Epoxy primer can indeed be applied to almost any surface, from bare metal to body filler and older paints. If you’ve recently done a replacement panel, soldering, or even removed a panel, use Epoxy Primer to protect the metals and prevent them from fast oxidizing and producing more rust.

Does car wax protect bare metal?

Despite the fact that the wax coat must be kept, the initial wax to bare metal coating clings and penetrates in a way that cannot be undone. If a bare metal hot rod owner only polishes it once, that one layer is virtually certain to produce complications when it’s time to pursue a unique direction, including such paintings.

Is lacquer or polyurethane better for metal?

Each could be used on metals and each has its own set of advantages. Poly provides the best resistance from water damage for residence DIY projects, making it perfect for patio furniture that sees a lot of water. Lacquer is ideal for metallic surfaces which may be exposed to heat, such as those found outside.

What is a good metal sealer?

Silicone seems to be the most extensively used and adaptable metal adhesive available. Silicone is a versatile material that may be used to seal a variety of metal components and surfaces. It’s utilized to construct metal roofing systems, windows, maritime buildings, and plumbing systems.

How do you treat bare metal surface rust?

White vinegar seems to be the only harmless rust remover I’m aware of. It’s a fantastic corrosion reducer for really minor metal corrosion. I soak a hand towel in vinegar and rub it against the rusted metal. The corrosion is usually always removed within several hours, and I don’t have to scrape the metal.

References:

https://www.jalopyjournal.com/forum/threads/how-can-i-keep-sanded-bare-metal-from-rusting.454362/

https://auto.howstuffworks.com/bare-metal-hot-rods.htm

https://www.classiczcars.com/forums/topic/18943-temporarily-protecting-bare-metal/

https://www.classiczcars.com/forums/topic/18943-temporarily-protecting-bare-metal/

https://forums.aaca.org/topic/301876-how-to-stop-rust-on-unprimed-car-in-garage/

https://findanyanswer.com/what-can-i-put-on-bare-metal-to-prevent-rust

https://www.motortrend.com/how-to/cleaning-preserving-bare-metal-parts/

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