Some restorers believe filler primer is little more than liquid body filler. In most cases, the filler primer or high-build primer is also a urethane product. You can generally add as many coats of filler primer as you want, sanding between each coat (as some restorers do) or after every three or four coats.
What is a high build primer?
High-Build Primer Surfacer is a flexible acrylic coating for priming steel, aluminum, urethane, fiberglass and plastics. FEATURES. • Provides superior adhesion. • Excellent filling properties. • Works on flexible or rigid substrates.
Is filler and primer the same?
Autobody filler is (basically) made of a vinyl ester or a polyester type resin. Epoxy primer is (basically) made of an epoxy type resin. If you were to bond/glass over a metal pad to a fiberglass boat, vinyl ester or polyester is never used, epoxy is.
What is the difference between a primer and a filler primer?
What Is The Difference Between Filler Primer And Primer? A filler primer is basically formulated to fill in any pits on the surface from sanding or rust, which is faster than an epoxy primer alone. It is believed by some restorers that filler primer is not much more than liquid body filler.
What is high build primer filler?
WURTH High Build Primer / Filler is chromate free and easy to sand. It is designed to be a fast drying easy sanding primer that can fill uneven surfaces, minor scratches and sanding scratches prior to top coating.
28 related questions foundWhen should I use high-build primer?
The reason for going with high build primer is to help eliminate those "dimple" spots, usually less than dime size, that I have gotten in this particular build when finishing up the feather fill. By spots I am referring to small high dimple size spots that are barely perceivable.
Do I need high-build primer?
High build primes gives you an even surface for the paint to absorb evenly. You can use it, but it won't benefit you other than priming the substrate, depending on which hb primer you use. Some require a additional primer. SW high build is good and does not.
How much will high-build primer hide?
High build primer can be a god send if you have a small imperfection in a panel, you can hide small scratches,small dents,etc etc as long as you know what you are doing. I generally will put 2 or 3 good coats on an iffy panel, let it dry then dust with a dark spray can then wet flat back with 800.
Does body filler go on bare metal or primer?
The short answer is filler companies suggest it needs to go on bare metal, and epoxy companies suggest you put filler over epoxy so they can sell more of their product.
Can you put high primer over etch primer?
Is it ok to spray upol high build primer over upol acid etch primer ? yes that's the way your supposed to do it, the etch bites into the bare metal and the high build takes a key to the etch.
What primer should I use on bare metal?
Both Epoxy Primer and Self-Etch primer (Self-Etching primer) can be used on bare metal. Both provide corrosion protection, and both can be top-coated with primer surfacer.
Can you spray etching primer over body filler?
Yes. You can apply self etch over fully cured filler.
Can you put wood filler over primer?
Re-apply your wood filler OVER the first coat of paint/primer. Wait for it to dry, and then sand as you normally do. I've applied wood fill OVER primer a number of times and my finish has always turned out great!
Is high build primer a sealer?
Primer Filler - As a high build filler this product is capable of 2.5-3.0 mils per coat requiring less coats per application. Combined with easy sanding, this product will reduce repair time and increase shop productivity. Primer Sealer - The addition of urethane reducer makes this an excellent primer sealer.
What does filler primer do?
Rust-Oleum® Filler Primer is a hi-build formula that fills in minor imperfections in the surface and improves topcoat adhesion and appearance. Use on metal, wood and fiberglass surfaces. Do not use on surfaces that will come in direct contact with heat or high temperatures such as mufflers or exhaust components.
Can you apply body filler over paint?
Can they be applied over paint? A. Evercoat fillers are designed to work over bare, properly prepared substrates such as: steel, aluminum, galvanized metal, fiberglass, and SMC. Fillers and putties will normally work OK over properly sanded (80-180 grit) cured OEM paint.
What is the difference between body filler and putty?
“The difference between putty and filler is basically the “talc” in the product. Most of our Rage line of fillers have Eco-Resin technology. With that, we use similar ingredients to putty. Therefore, when using it, the putty is no longer necessary in the repair process.”
Does body filler prevent 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.
Are body fillers strong?
We often get asked about metal body fillers or reinforced fillers and what they are. These fillers are incredibly strong but do have their place in the body shop.
How many layers does a high build primer have?
The trick with High build primers is to keep the application to 3 coats at a time. I will usually go 3 applications of three coats. Finish the body work with 180 grit sandpaper and get all of your pinholes and sandscratches filled before you prime. Then apply three coats of HB with a 1.4 mm tip on your gun.
How do you sand a high build primer?
Sand the new panels with 220 or 240 grit on a DA (or by hand) then spray on a couple medium coats of epoxy primer. When you're ready to paint (assuming outside of the wet on wet time window then just scuff sand the epoxy with some 600 grit and its ready to paint.
How long can you leave 2k primer before painting?
Check the tech sheets but most are around 12 -24 hours. If you're playing it safe, give it overnight.
Can you use high build primer on Baremetal?
If you are talking about those tiny rust spots in the pictures you posted I would scuff the primer down to bare metal to remove any rust then spray high build primer over those spots. Some purists will tell you you can't do it that way. That epoxy primer must be used over ALL bare metal.
What is high build drywall primer?
High build primer is basically a thick primer as compared to regular or traditional primer. It gives you an even surface for the paint to absorb evenly. High build primers are designed for new drywall. It helps in hiding tape lines and creating an even surface. Not even as a level but even as a substrate.
Can your body fill over primer?
Applying body filler over epoxy primer provides maximum corrosion protection for the metal. Apply filler within seven days of applying epoxy primer to maximize adhesion.
