QA

Question: How To Bondo Large Rust Holes

Can you Bondo rust holes?

While “Bondo” is the name of a 3M product, it has also become a generic term for plastic body filler, and several companies make similar stuff. The putty can be useful for filling rust holes in the most rust-prone areas of a car including quarter panels, fenders over and behind the wheels, and the bottoms of doors.

How do you fix a big rust hole without welding?

Remove the Rust Around the Hole by Sanding It. Take the sandpaper and rub it around the hole. Cut Around the Damaged Spot Slightly. Fill the Hole Using Metal Sheets. Add Bondo Glass Stratum. Sand the Spot. Utilize the Bondo Body Filler That’s Within the Accepted Range. Use Automobile Primer. Paint the Spot.

How do you fix rust without welding?

If all of the metal is bare, clean steel with no rust you can use our 2K Aerospray Epoxy Primer. This is a unique design that allows you to apply a 2K product you’d use in a paint gun out of an aerosol can. Coat both sides of your patch panel and also the surrounding areas on the original metal.

How do you treat rust before Bondo?

We either blast the surface to remove the rust in pitted areas or we grind then treat the metal with Picklex 20 to stabilize the rust, we allow it to dry then scuff it with some 80 or 120 then apply the filler pushing it into the surface.

How do you fill holes in metal without welding?

Epoxy or Tape Epoxy and tape are two common no-weld hole repair options. These do-it-yourself approaches are effective when repairing a small hole rather than a significant tear. Specialty epoxy and tape products are designed to patch steel and metal.

Is there a filler for metal?

Permatex Liquid Metal Filler is an easy-to-use filler that can be drilled, filed, sanded and painted. It forms a long-lasting, metal-tough bond and works on metal, wood, and concrete.

What to use to fill holes in metal?

Fill the Entire Hole You can use a hard piece of cardboard, a kit applicator, or a putty knife. Make sure that you apply epoxy until the entire hole is filled or repaired. Epoxy will form over the metal surface and the edges of the hole will overlap a bit. Allow the epoxy to harden.

Is Bondo a good body filler?

Bondo Body Filler cures fast, shapes in minutes and is formulated to be a non-shrinking and permanently durable material. In addition to its uses on vehicle exteriors and other metal surfaces it is also a suitable repair option for wood, fiberglass and concrete.

How much rust is too much rust under a truck?

If less than 25% of the thickness of the frame has been compromised we can pass it through as acceptable. It does matter where on the frame the degradation has occurred as well due to load-bearing concerns, but that’s a good starting rule of thumb.

How do you fix a rust hole in a truck bed?

How To Fix A Rusted Truck Bed Prep The Area. Remove The Rust With Wire Brush Wheel. Sand Down The Remaining Rust. Wash Off The Dust & Sediment. Use A Chemical Rust Remover Or Rust Restorer. Weld Any Needed Patches & Paint The Truck Bed. Apply Body Filler. Sand The Patch Down Smooth.

Can you use JB Weld on rust?

No, because the rust present when the JB Weld is applied will prevent any kind of permanent bond from forming between the epoxy and the steel underneath the rust. When epoxy and steel start to expand / contract from variations in temperature (they move at different rates) they’ll separate eventually.

Will painting over rust stop it?

Painting over rust can stop the spread by disturbing the process that creates rust. As long as the rust doesn’t cover a massive area, you should be able to use paint to stop it. However, you should consider how rust forms and how thick or wide the rust is.

Can you put body filler over rust?

The mere application of body filler over a substrate won’t stop rust, Miller said. Fillers might contain corrosion resistance and slow the process, “but they’re not gonna stop it,” he said. Put filler on rust, and “(the rust) may continue to grow,” he said.

What is the best body filler for rust?

Compare with similar items This item Bondo Metal Reinforced Filler – High Strength Filler, Can be Drilled and Tapped – Will Not Rust, 11.2 Fl oz with 0.37 oz Hardener Bondo Glass Reinforced Filler, 00272, 1 Quart Add to Cart Add to Cart Customer Rating 4.6 out of 5 stars (704) 4.6 out of 5 stars (2872) Price $2097 $1797.

How do you fix rusty holes in metal?

If you can’t get a patch to stick, consider using an epoxy filler instead. Epoxy filler is like a putty, so all you have to do is spread it flat on a piece of fiberglass mesh glued over the hole. It’s a simpler way to repair a hole, but it doesn’t last as long as a patch.

How do you fill up a rust hole?

Remove all of the paint around the hole with a wire brush attachment on your drill. You’ll also need to cut away the affected metal with a grinder or tin snips. Once you’ve cut away the metal, cover the hole with a piece of wax paper and apply a mixture of fiberglass filler and hardener.

How do body shops fix rust holes?

The most cost-effective small area repair involves a technician sanding away the corrosion and some of the surrounding paint. The exposed metal is then carefully primed and repainted to accurately match your car’s original finish.