There are several different types of primers and depending on what you chose will have an impact on the quality of your repair. Here are a few terms to be familiar with & a few choices.
1 or 2K ?
This just means it requires an activator. 2K products require a hardener to be added before use where a 1K does not. 2K products on a generalization are always your best choice. They will cross link which makes your finished film a giant molecule that is more durable then a 1k product.
Primer vs Primer Surfacer
Primers are usually applied as a pre-treatment under a primer surfacer. A primer you don\'t sand after applying, a primer surfacer is designed to fill and will be sanded after drying.
Treating Metal
For the best protection most people will turn to an epoxy primer before applying a urethane filler. Some people swear by etch primer & others will simply use a direct to metal urethane primer. Anything you chose will work, it all depends on the level of comfort you are after.
Etch Primer
Etch primers come in two styles. 1k & 2k. 2K is the preferred choice if using an etch. It is used only on the bare metal underneath of a primer surfacer.
Epoxy Primer
Epoxy primers are usually considered the best of the best. They will only come in the 2K form. They offer fantastic metal protection and durability. They are usually applied under your primer surfacer. Some epoxy\'s you can use as a surfacer, however they do not sand very well compared to urethane based surfacers.
Urethane Primer
Many people refer to this as 2K primer (despite the fact many other products are 2 part). Urethane primers generally only come as primer surfacers designed to fill. They also come in regular or direct to metal (DTM), which simply means it does not require an etch or epoxy primer be applied first. A DTM is your best choice if you want a 1 step application, however the quality won\'t be as high as if you were to apply an epoxy primer first.
Polyester Primer
Polyester primers are severally high building primer surfacers. They can be used prior to using a urethane surfacer. This kind of product is often used on larger restoration jobs when trying to get a larger area very straight. its like a spray putty but sands easier.
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HELLO, I was wondering if you can shed some light on my problem. I'm having some trouble spraying silver. I am use DuPont solvent base. Some time it sprays out and looks like chrome and some time it comes out coarse looking. What I'm I doing wrong?I know pressure has a lot to do with it, but I'm at a lost? Any help would be great
HELLO, I was wondering if you can shed some light on my problem. I'm having some trouble spraying silver. I am use DuPont solvent base. Some time it sprays out and looks like chrome and some time it comes out coarse looking. What I'm I doing wrong?I know pressure has a lot to do with it, but I'm at a lost? Any help would be great
Paddy and Murphy are on a cruise ship. Paddy says "It's awfully quiet on deck tonight." Murphy says, "Everyone will be watching the band." Paddy says, "There isn't a band playing tonight." Murphy says "I definitely heard some ****er say "a band on ship
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now it just has a little mouse crate engine from the general 
