Can I use etching primer over bondo?

You can bondo over bare metal no problem. You wont have any problems spraying epoxy, filler, or etching primer over it either.

Can you put body filler on top of etch primer?

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.

What kind of primer should I use on bondo?

You should use a “direct to metal” (DTM) primer to help top coats stick to the metal but it’s not needed under body filler most of the time. Once the metal is primed then you can apply a “filler primer” (2K) to help hide scratches and minor surface irregularities.

How do you paint over bondo?

Do You Need To Prime Bondo Before Painting? To help your top coats adhere to the metal, you should use a “direct to metal” primer (DTM), but it is not usually necessary under body filler. Once the metal is primed, you can apply a “filler primer” (2K) to hide scratches and minor surface scratches.

Can you bondo over old bondo?

Yes, you can layer bondo over bondo as much as necessary with no problem.

Do you need to paint over etch primer?

Self Etching primer can in fact be painted over but you need to closely follow the manufacturers application and top coat guide. As a rule of thumb Self Etching Primers need another coat of primer over them to fully seal everything up long term.

Do you have to 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.

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.

Can you sand self etching primer?

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.

What primer do I use over body filler?

epoxy primer
If spraying two coats, the product must dry overnight before applying over body filler. Wet sanding epoxy primer is usually the best way to prep it because epoxy has a tendency to clog paper when sanded dry. Polyester primer is a very thick two-part product and is used when there’s a good deal of bodywork.