Kirker stops rust or Epoxy primer?

[Midcoasted]

I need to seal off bare metal before applyin 2k urethane primer. So I have to spray epoxy first or can I spray this Kirker stop rust sealer?http://smartshoppersinc.com/Kirker/primers.html Then spray 2k urethane primer over it. My only question is because this stuff is 50 bucks a gallon cheaper than the epoxy and Im on a budget. Plus it saves time because I dont have to sand before putting 2k over it. I mean everyone says use epoxy but doesnt this fulfill the same purpose? I just need some input.

[Midcoasted]

Or does any1 know where to get cheap grey epoxy primer in the quart? I dont need a whole f'n gallon to do one car, since im only sprayin two coats of Epoxy and I have a 2 seater Honda Del Sol. Maybe 2 quarts at the most. Im thinkin even 1. I just need to eliminate the 50 dollar difference between the epoxy and stops rust, whether its buying Stops Rust or buying two quarts of Epoxy with activator for 40 bucks.

[Len]

I'm not familiar with those product but if there's no technical information available for the products you're using don't use it unless the money means more than how long the job will last. Go to the Kirker web site and look for the info you need. If the tech info says it's a "direct to metal" primer then you know where you can apply it.

[Midcoasted]

Well I know it can go over metal, Im just trying to figure out if its any good. Or is skimping on the epoxy gonna hurt me in the long run?

[SHOWCAR FINISH]

I read it and it said it's not recommended over bare metal. You can etch, epoxy, or water base the metal.

[Midcoasted]

Epoxy it is. Stupid budget inflated big time. LOL.

[SHOWCAR FINISH]

Yeah, that's your best bet. Nothing sticks as well as that. Adhesion is very important in corrosion protection. I'd say you're fine with that hi build but your wet on wet apps should be within the product line unless you know for sure the combo is a go.

[Midcoasted]

Im not sure Im following you. Im buying Kirker 2k urethane and Kirker epoxy. I was planning on puttin on 1 coat of Epoxy, let it flash. Second coat of Epoxy, let it flash, then block sand with a guide coat. I will then lot the epoxy cure overnight. Then I will aplly 2k urethane, guide coat, block sand with p220 wet, another coat, another guide coat, block sand with p220 wet, and a 3rd coat with no guide, then block sand to a light scuff with p600 wet. I will then let that cure overnight. Should I let it sit for 3 days like some recommend? Then basecoat/clearcoat all in 1 day, then 2 days after that Im gonna wetsand the Clear with 1500 with an orbital. buff/polish Then go to 3000 with the orbital and buff and polish again and tape off the edges. All the while hand buffing the edges.

[Ed in SC.]

Hi there Midcoasted, I use Kirker epoxy, If you are going to sand the epoxy,
then apply 3 coats. Wait 24 hrs. or more, then sand 120 grit or close to it. to spray high build.
But if your going to use a high build primer too, then all you need to do is,
one wet coat of epoxy (I use 2), let flash or dry for one hr. then spray 3 coats of high build.
Now dry for 2 or more days to let the high build shrink.
Do the first block sanding with 180 grit. and guild coat.
This will find the low spots and cut down the high spots fast.
Then if needed spray 2 or 3 more coats of high build and block sand again.
Depending on the lows, you may use 240 or 320, or go back to the 180 for fast cutting of the highs. Good luck. Ed.