Once the epoxy primer is down you no longer have to worry about rust while doing your repairs – especially since you can apply body filler right on top of it. Then simply respray the areas you worked on to re-seal them.
Can you put body filler over self etching primer?
Filler can be applied over some epoxy primers, but I wouldn't try it over self etching primers.
Can I use body filler 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.
What goes over etch primer?
As a rule of thumb Self Etching Primers need another coat of primer over them to fully seal everything up long term. We suggest using a Urethane Primer over the self etching primer as a barrier between the self etching primer (Do not use Epoxy over Self Etch).
Can you put Bondo on top of primer?
Yes, it can. Bondo is designed in a way that it can stick on primer, paint, and even bare metal. Before modern-day fillers were created, they were designed to stick on bare metal first before primer is applied.
44 related questions foundCan I 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.
Should I prime before body filler?
End of dialog window. Put your fiberglass or body filler on bare metal first, work it to near perfect, then prime on top and do your spot putty. The reason for this is the body filler wont stick to paint or primer.
Can you spray etch primer over etch primer?
A etch primer cannot be painted directly over. Surfacers and other primer/sealers are required to apply it. I have used semigloss black spray paint directly over etching primer before without any problems.
Can you sand etching primer?
In any complete restoration or body repair project, you will to sand primer at one point or another. However, most manufacturers of self-etching primer, due to the acid base of the products, don't recommend directly sanding the self-etching primer.
How long can you leave etch primer before painting?
Allow the final coat of Self Etching Primer to dry for a minimum of 3-4 hours before dry sanding, or 15 minutes before wet sanding with #400 grit sandpaper. Do not use near open flame. Dry and recoat times are based on 70°F (21°C) and 50% relative humidity. Allow more time at cooler temperatures.
Can you use body filler over por 15?
CAN I USE BODY FILLER OR PUTTY WITH POR-15? Yes. First paint both sides of the rusted area with POR-15; then use body filler or putty as soon as the POR-15 is dry to the touch.
When should you use etching primer?
Etch Primers are intended for use as primers on new or relatively sound ferrous and non-ferrous metal surfaces. Examples of the types of surfaces on which these products would be used are light- weight tubing or thin sheet metal surfaces that cannot be prepared by abrasive blast cleaning.
Do you bondo before or after primer?
bondo goes over bare steel only. Never over any kind of paint, primer, etc.
Can you epoxy over etch primer?
It is no longer recommended to use an etch primer under an epoxy primer. Residual acid from the etch primer can interfere with the proper curing of the epoxy. This may lead to extended dry times, potential blistering, and even adhesion failure.
Do you have to use etching primer 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 2K over etch primer?
You can spray paint directly over it. Most 2K high build primers are not even supposed to be used over bare metal- meaning acid etch or epoxy has to be sprayed first over the bare metal before 2K high build primer can be used.
Can you put etch primer over paint?
When applied to paint they can cause chipping and corrosion to the existing paint surface. This will require sanding as well as a fair amount of grunt work just to get the car ready to be primed again. For this reason you should not use self-etching primer on existing paint or gloss finish.
Can I paint directly on self etching primer?
Can You Paint Directly Over Self-etching Primer? It is possible to paint over self etching primer, but you must follow the manufacturer's instructions for applying and top coating. It is possible to top coat urethane primer with most coatings, so you will immediately be able to eliminate any adhesion issues.
What is the difference between primer and etch primer?
Regular primers can't prevent rust unless sealed with a rust-resistant sealant or top coat. Self-etching primer on the other hand can prevent rust on metal surfaces. This is because self-etching primer binds with the Metal to produce a moisture-resistant coating.
Should body filler go on bare metal?
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.
How do you prepare body filler for primer?
The first step is to prep the surface.
Here Jeff uses a red Scotch-Brite pad (about the equivalent of 220-grit sandpaper) to scuff the surface of the primered metal so the filler will adhere properly. Jeff prefers Scotch-Brite because it roughs-up the surface without removing a significant amount of primer.
What happens when you put bondo over paint?
Does Bondo Stick To Paint? It is normal for filler and puttie to work OK over OEM paint that has been properly sanded (80-180 grit). The aftermarket paint market is filled with a variety of different types (lacquer, enamel, urethane, water-based).
Why does bondo show through paint?
Yeah, that's totally normal. It's just that the patches of bondo soak up the primer differently than the metal but epoxy is the way to go. Just let it dry and give the entire truck a light sand with 400 grit and apply a couple more coats of epoxy.
