Self etching primer bonds
well
to bare metal surfaces and can be top coated in a short period of time. Epoxy primer can be applied in heavy coats which can be guide coated and block sanded to remove small imperfections in the body. Epoxy primer takes longer to dry (cure) before it can be sanded or top coated.
Can you apply epoxy primer over self etching primer?
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). Urethane primer can be top coated with most coatings so you will immediately eliminate any worries of adhesion issues with your top coat.
What is etching primer used for?
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.
What is the difference between etching primer and filler primer?
Because it cures quickly, it’s the method of choice for collision shops. But a key difference with etch primer is that
you need to apply your filler or bondo first directly to the metal before spraying it
.
Do you have to use epoxy primer?
Two-part epoxy primer needs
to be mixed thoroughly before applying
. … Since paints in the automobile and marine industries are very important for resisting corrosion (rusting), epoxy coatings are widely used as primers to improve the adhesion of the metal surface.
Can you paint directly over etch primer?
You can’t paint directly over etch primer
. You need a surfacer or other primer/sealer over it.
Do you have to sand self-etching primer?
However, most manufacturers of self-etching primer, due to the acid base of the products,
don’t recommend directly sanding the self-etching primer
. … It should be noted that self-etching primer is mainly an acid base with pigments added, so you should be wearing a respirator when applying it.
Do I need etch primer on bare metal?
Both Epoxy Primer and Self-Etch primer (Self-Etching primer)
can be used on bare metal. … If you’re doing some body work and you have some bare metal, you don’t want to just put regular primer surfacer because it does not have the corrosion properties like Epoxy or Self-Etch.
Can I use etch primer over body filler?
Yes
.
You can apply self etch over
fully cured filler.
Can you use etching primer on plastic?
I
would not use an self etching primer on plastic as it will sink
. (it does on car bumpers anyway). Try and get a plastic primer (available in any autoparts store here). Give a VERY light dusting of this (A standard aerosol can can do 4 or 5 car bumpers easy) and let dry.
Does body filler go on bare metal or primer?
For
small repairs, you can bog directly over the bare metal
. If the repair is larger, or you’re looking for a longer-lasting job, apply a base coat of epoxy primer before laying on the filler.
What primer do I use over body filler?
Urethane primer (2K)
Urethane primer is the most common primer used in auto body and restoration by far. It has good solids and fills well. It is easy to sand and can provide you with a perfect body when blocked properly. Care should be taken when applying it as to not use too much.
How many coats of epoxy primer do I need?
The epoxy primer should be applied in medium wet coats, allowing a half an hour between each coat at around 70 degrees.
One to two coats
will render a one millimeter dry film thickness, which is typically enough to be completely effective. Make sure to evenly spray each coat completely across the bare metal surface.
Is etch primer epoxy?
Filler and etch primer are both porous,
epoxy is not
, so epoxy provides a moisture barrier right at the metal where it’s needed the most.
Is epoxy primer better than regular primer?
1. Over Bare, Clean Metal – Epoxy primers are
amazing at sealing up bare metal
and from allowing moisture or corrosion to creep in. Epoxy primer actually seals out the oxygen from the metal, leaving no chance of rust or corrosion forming on the surface like some cheap spray bomb type primers.
How long after etching primer Can you paint?
DRY & RECOAT
Dries to the touch in 10 minutes and to handle in
15-30 minutes
. Apply a top coat after 30 minutes.
