Weld thru is a type of primer that helps with welding metal. If you have ever tried to weld metal, then you will know how difficult it is to do so. Welding involves heat and fire working on relatively small pieces of metal. These two factors make it almost impossible to weld any piece of metal directly. A lot of precautions need to be taken before starting a welding project so that the surface remains unharmed as much as possible. Weld thru primer comes in handy at this point. It creates an ideal surface for welding by acting as a middleman between the surfaces to be welded and the final surface. You can think of it as a shield that protects the underlying layers from being affected by heat and fire at the final stage of your project. This article, therefore, takes you through some of the best weld-thru primers that are currently available in the market today:
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PREVENT COSTLY COMEBACKS: Weld-Thru Coating II prevents corrosion on bare metal panels and parts. It’s a zinc-based aerosol coating that draws away contact corrosion, leaving substrates strong. CONVENIENT SPRAY: The aerosol spray application is fast and efficient, which helps increase shop productivity and throughput. QUICK DRYING: Dries in as little as 5 minutes before MIG welding for efficient throughput. MINIMUM WELD SPATTER
Features
- Resists weld spatter
- Draws away contact corrosion, leaving substrates strong
- Applies fast to increasing shop efficiency and productivity
- Quick drying – dries in as little as 5 minutes before MIG
Keep your metal surfaces looking like new with Seymour 20-1675 PBE Professional Primer. This durable, zinc-enhanced coating protects all metal surfaces and is a dry film is the 86-percent pigment that results in less smoke and electrode wear when welding. It’s also heat resistant up to 250˚F.
Features
- Heat resistant up to 250˚F
- Cuts faster than 100%-Zinc-rich coatings
- A durable, zinc-enhanced coating that protects all metal surfaces
- Effective touch-up for all marred
Rust-Oleum 7582838 Professional Primer Spray Paint offers twice the protection of paint alone and is a high-quality, durable oil-based formula that maintains consistent, corrosion-resistant color despite the elements. Ideal for use on ferrous, non-ferrous metal, wood, concrete, masonry, and other such surfaces to prepare them for painting as well as provide rust protection. Covers up to 14 sq ft and dries to touch in 15 minutes.
Features
- Heat resistant up to 250˚F
- Cuts faster than 100%-Zinc-rich coatings
- A durable, zinc-enhanced coating that protects all metal surfaces
- Effective touch-up for all marred
Never worry about gluing your fingers together when you use the 3M 08609 Window-Weld Super Fast Urethane Black Cartridge. This all-purpose adhesive is a medium viscosity single component moisture curing urethane adhesive that bonds replacement auto glass to car bodies, and bonds parts to each other in the automotive industry. It bonds well to most substrates, including plastics, metals, and most rubbers. This product is packaged with a 3M Professional Caulking Gun – PN
Features
- A medium viscosity single component moisture curing urethane adhesive
- Bonds replacement auto glass to car bodies
- A thick bond line may allow some non-structural body panel applications.
- 3M Professional C
CRC 05048 ZINC-IT™ INSTANT COLD GALVANIZE effectively fights rust and corrosion and provides protection from hot dip galvanized. This high-performance coating is composed of more than 93% pure zinc, the highest percentage available. The 05048 ZINC-IT™ INSTANT COLD GALVANIZE leaves a flat gray paintable finish on surfaces, dries fast, and is easy to apply with a brush, roller, or spray gun.
Features
- High-Performance coating of >93% pure zinc
- Actively fights rust and corrosion.
- Provides protection of hot dip galvanizes with on-the-job convenience.
- Leaves a flat gray paintable finish on surfaces
The Rust-Oleum Automotive 2-in-1 Filler & Sandable Primer paint is a two-part filler and sandable primer suitable for use on wood, metal, and fiberglass surfaces. The filler and sandable primer can be used to fill minor surface imperfections and sand smooth for the ultimate finish. The hi-build formula provides superior top coat adhesion and a flat finish that can be sanded to a smooth surface. This high-quality, oil-based paint will yield.
Features
- High-Performance coating of >93% pure zinc
- Actively fights rust and corrosion.
- Provides protection of hot dip galvanizes with on-the-job convenience.
- Leaves a flat gray paintable finish on surfaces
VHT SP302 Prime Coat is a premium primer filler that enables you to create an excellent foundation for any enamel, acrylic, or synthetic lacquer. It provides a tough, air-dry base with excellent adhesion and ensures the desired finish. The multi-purpose product can be used on metal, fiberglass, masonry, wood, and most plastic surfaces and can also be applied over old paint jobs.
Features
- Oil-based 2-in-1 paint
- Stops Rust formula
- Covers up to 10 sq ft
- Dries to the touch in 10 minutes
- Filler and sandable spray paint fills minor
Rust-Oleum 248656 Professional Grade Rubberized Undercoating Spray is a professional-grade formula that provides superior protection against corrosion and damage from water, salt, and other chemicals. It dries to the touch in 1 hour, so you can start working on your project right away. This product will cover up to 10-15 sq. ft., depending on the coating’s thickness. This product features a wide, comfortable spray tip and any-angle spray technology for easy painting even upside down
Features
- Fills scratches or pin holes
- Multi-purpose product that can be used on metal, fiberglass, masonry, wood, and most plastic surfaces
- Excellent adhesion to intermediate and top coatings
- Tough
Why Do You Need A Weld Thru Primer?
1. It protects the surface you are working on
The best thing about weld-thru primers is that they protect the surface of your workpiece. You can use them on any surface that needs to be protected from heat and fire. Whether you are working on an old car or a new one, weld thru primer will help to protect the surface from damage. They are very easy to apply as well. All you need is a brush and some time to do it properly. After applying them, they will dry quickly and will leave a smooth finish for you to work with.
2. It creates a smooth surface for welding
Welding is not an easy task at all. It requires a lot of skill and practice before you can get good at it. However, once you get down to it, there are many other factors that can affect its final outcome such as the quality of metal used, the type of welding machine used, the type of paint used, and so on. In such scenarios, the best thing to do is to use a weld-thru primer. It will help you to create a smooth surface for welding by acting as a shield between the layers of metal that you are working on and the final surface. It will protect the surface from getting damaged and at the same time, it will act as a proper medium for welding.
3. It helps in controlling rust on metal surfaces
When you use weld thru primer, you also get some additional benefits along with it such as protection from rust. If your project involves working on metal surfaces that are prone to rusting quickly, then this is one of the best ways to go about it. You can use these primers for many different applications such as repairing old cars or making new ones or even creating art pieces from scrap metal in your backyard! They come in different colors and hence, can be used for different purposes easily.
Advantages
- It is a very effective product. Weld thru primer acts as a shield between the layers to be welded and the final surface. This helps in making it easier to weld metal without having to worry about any damages caused by heat and fire at the end of your project. The primer can also be used on many different surfaces like iron, steel, aluminum, copper, and more.
- It is cheap. You don’t need to spend too much money on weld thru primer because it is available in bulk packs which are quite cheap when compared to buying single cans one after another. This makes it ideal for long-term use for those who frequently work with welding tools on a regular basis.
- It comes in various forms and sizes so that you can choose the type that suits you best depending on your needs and preferences while working with welding tools.
- It is easy to use. You do not need to be an expert to use weld thru primer. It comes in a simple spray can form which makes it easy and convenient to use.
Spray And Walk Away Weld Thru Primer
1. Spray and Walk away Weld-Thru Primer
This is a spray-on primer that helps you to create a surface on which you can weld. It is a water-based primer that sticks to the underlying surfaces and protects them from burning or melting. It is a highly effective primer that leaves no residue behind. You can use this product to prime any kind of metal surface and then start welding it in no time. This is one of the best products in the market today because it has been designed to work with almost all kinds of metals, including aluminum, copper, brass, stainless steel, etc.
2. Rust-Oleum 2X Ultra Cover Premium Spray Paint & Primer in One – White Gloss
Another effective product in the market today is this Rust-Oleum 2X Ultra Cover Premium Spray Paint & Primer in One – White Gloss primer. It comes with an ultra-cover technology that creates an ideal surface for welding. It has also been designed to resist peeling, cracking, blistering and fading. This is a top-of-the-line product that has been specifically designed to work with metal surfaces. It has a unique formula that helps it adhere to metal surfaces and protects them from the harsh effects of heat and fire.
3. Rust-Oleum Stops Rust Protective Enamel – White Gloss
This is another great primer from Rust-Oleum. It is designed to protect metal surfaces from rust, corrosion, and peeling off. It comes in a white gloss finish that gives it an attractive look. The best thing about this product is that it comes with a protective enamel technology that makes the surface smooth and shiny after application. This product works well on all kinds of metal surfaces, including stainless steel, aluminum, etc. You can apply this primer on any type of metal surface before welding or painting it for protection against harsh environmental conditions like rain or snow etc.
Dried And Coated Weld Thru Primer
1. Bostik-Weld Thru Primer
This is a water-based primer that is used to make the surface of metal ideal for welding. It dries within a few hours and allows you to start your project immediately after applying it. The primer can be applied with a brush or roller. It is available in a range of different sizes, including 1 liter, 5 liters, 10 liters, and 20 liters. The primer also comes with its own brush which makes it very convenient for your project as you do not have to look for one yourself.
2. Dried Weld-Thru Primer
This is another great product from Bostik that is used for priming surfaces before welding them together. This primer dries within a few hours and creates the ideal surface on which to weld metal pieces together. The product can be applied using either a brush or roller depending on the area you want to cover with it. It is available in different sizes, ranging from 1 liter to 20 liters. It is also available in different types, including white, gray, and black.
3. Rust-Oleum 147800307 Welder’s Prime
This is a water-based primer that is used for priming surfaces for welding purposes. The primer dries quickly within a few hours after application and does not require any special protective gear or equipment to apply it. It can be applied with either a brush or roller depending on the area you need to cover with it. The product comes in different sizes, including 1 liter and 5 liters. It is effective in creating the ideal surface for welding metal pieces together without affecting the underlying surface.
4. Rust-Oleum 147800306 Weld Thru Primer Gray Primer (5 Gallon)
This is another great product from Rust-Oleum that is used for priming surfaces before starting your welding project on them. This primer dries within a few hours after application and creates the ideal surface on which to weld your pieces together. It is available in different sizes, including 1 liter, 5 liters, and 20 liters. The product is also available in different types, including white and gray.
Conclusion
Welding is a process whereby two pieces of metal are joined together by heating them up and then passing electricity through them to melt the surfaces. A weld thru primer acts as a shield between the heated surface of the metal and the metal that you want to weld. Weld-thru primer is generally used on parts that do not get direct contact with an electrical source or heat. Primers are used to prepare the area for painting or coating. They are usually applied to smaller areas that are difficult to paint. A good weld thru primer can do wonders and help you save a lot of time that you would have otherwise spent painting. So, when you are out there shopping for an ideal weld thru primer, make sure you choose the best one.
