Etch Primers are single pack metal primers formulated with a combination of resins to maximise adhesion to the various metal surfaces on which they may be used. A low level of phosphoric acid Phosphoric acid (also known as orthophosphoric acid or phosphoric(V) acid) is a weak acid with the chemical formula H₃PO₄. Orthophosphoric acid refers to phosphoric acid, which is the IUPAC name for this compound. The prefix ortho- is used to distinguish the acid from related phosphoric a…Phosphoric acid
How to Prime over etch primer?
After sandblasting...etching primer or epoxy primer
- bri-rock. The shop that is going to sandblast my coupe only has etching primer to shoot the car with after the sandblasting.
- Gambitt. I'd personally want epoxy...just go with a good brand like PPG or Dupont.
- BA. ...
- rbanks40. ...
- Miikeremains. ...
- sevt_chevelle. ...
- GMJoe
- Sid69Z's. ...
- CDJr. ...
- 1yrat69. ...
What primer to put over etching primer?
Epoxy primer/sealer over etching primer?
- Mr Sunshine Veteran Member. Need some help from experienced painters which I am not. ...
- Huggerorange80 Member. ...
- xten Veteran Member. ...
- l16pilot Veteran Member Lifetime Gold Member. ...
- xten Veteran Member. ...
- l16pilot Veteran Member Lifetime Gold Member. ...
- xten Veteran Member. ...
- l16pilot Veteran Member Lifetime Gold Member. ...
- xten Veteran Member. ...
- Jeep43 Veteran Member. ...
How to use etching primer?
applying the next coat. Allow the final coat of Self Etching Primer to dry for a minimum of 3-4 hours before dry sandpaper. Do not use near open flame. DRY & RECOAT Dry and recoat times are based on 70°F (21°C) and 50% relative humidity. Allow more time at cooler temperatures. Dries to the touch in 10 minutes and to handle in 15-30 minutes.
What exactly does Self etching primer do?
You can finish aluminium by:
- priming and painting it
- applying powder coating (a special material, which is applied in powder form, using static electricity to make the powder adhere to the part, and then baked in an oven to ...
- Anodizing it, which creates a thin chemical layer on the surface. ...
What do you use etching primer 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.
Is etching primer necessary?
After you remove the rust scales from the metal on your car, you need to apply self etching primer. It's a mix of phosphoric acid and zinc. The way it works is that the acid forces the zinc into the top of the metal. It's purely a surface coating, and it doesn't stop the rust.
Do I need etch 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 paint straight 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.
What's the difference between etching primer and regular 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.
Does etch primer need to be sanded?
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 after etch primer can I paint?
For best adhesion, apply 2 or 3 thin coats and allow each coat to dry for 2 minutes before applying the next coat. 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.
What do you put on bare metal before painting?
To properly prepare new metal surfaces, use mineral spirits to remove grease and apply a rust-inhibitive primer before painting. For painted surfaces that are in sound condition, remove dust with a clean, dry cloth, de-gloss the surface with light sanding, and wipe with mineral spirits to ensure good adhesion.
Can you brush on etch primer?
Apply one coat evenly by brush, roller or spray, after proper surface preparation. Avoid over-brushing and over-rolling as Etch Primer is quick drying. Do not thin for application by brush or roller.
Does etch primer stick to 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.
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.