Thread: Primer Questions

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Originally Posted by outdoorxtreme1

I have my car sanded down to bare metal right now. I'm getting ready to put some filler on in some places. What is the best type of primer to get to put on after the sanding of the filler is done? Also, I need a type that once I have primed it and if additional body filler is required I will be able to respray over that. Are there any sealing primers that I can use? I have read that you can't spray sealing primer over body filler. Any help would be appreciated. Thanks.

I would suggest an etch primer of some type, forget about a regular expoxy primer since you are down to bare metal. ....Overcoating of filler is just fine, as eventually you will be using some type of sealer over whatever is there just before the paint is laid down.


Bill S.

Can you spray etching primer over body filler? Also, can someone suggest some brands that are good to use for both etching and sealing at a decent price?

Thanks.

I've sprayed self etching primer over body filler many times with no problems. I don't know if it's recommended but I've never seen it cause a problem. I've used dupont varaprime for years along with other brands. Varaprime is the ugly green stuff but it sticks like crazy. You don't have to cover with it....a couple of light coats will do and you'll still be able to see through it. It's very thin and runs easliy....don't ask me how I know I started using it a long time ago Just go over it with a descent two part primer. I've got Sherwin Williams Ultra Fill II on the '35. It's urethane and tintable. Sherwin's new line is called spectraprime. There are a lot of good primers out there though and some have etching built in. Transtar has a primer like that I believe. Dupont's nason primer isn't too bad for the money......there's a lot out there.

Originally Posted by 35chevy

I've sprayed self etching primer over body filler many times with no problems. I don't know if it's recommended but I've never seen it cause a problem. I've used dupont varaprime for years along with other brands. Varaprime is the ugly green stuff but it sticks like crazy. You don't have to cover with it....a couple of light coats will do and you'll still be able to see through it. It's very thin and runs easliy....don't ask me how I know I started using it a long time ago

varaprime is one of the best. we did some test on it. the acme / select/shewin w is good to. i ways let the thinners burn out of it a bit .a lite scuff with a 3m red pad then go to dp 40 them k 200 to k36 with a tint as a sealer i never hammed on the filler with the etch but i did cover the hole part or body this way.it allways work for me