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Old 07-22-2009, 02:55 AM
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SPI epoxy as high build primer?

Can I use their epoxy primer as a high build primer? Does it sand well enough??
If not, would you use their regular primer or their high build primer?

This will be a nice, silver Trans Am and I want it straight. Not a quick scuff and shoot.

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Old 07-22-2009, 07:15 AM
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epoxy is all i use for resurfacing .
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Old 07-22-2009, 08:10 AM
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I like the Turbo 2k high build..mix it 4:1:1 good fill with that product and it cures out fast..great stuff for the weekend warrior. I like a slower reducer as it helps this particular material to lay out slick and wet..good practice for when you get around to shooting base coat..

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Old 07-22-2009, 08:31 AM
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i'm trying the turbo on my shop truck to see what it does.
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Old 07-22-2009, 11:40 AM
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Quote:
Originally Posted by BadHabitSS
Can I use their epoxy primer as a high build primer? Does it sand well enough??
.
Yes you can, but epoxy shouldn't be sprayed more than a couple of
coats at a time, and it doesn't build like 2K
I have gotten away with 4 coats but when you push it, it's real
easy to get pin holes.
Epoxy sands pretty good if you let it cure 2 days or more.
So you can do it, with multiple sessions and lot's of time.
2K sands easier and fills better, and can be done all at once.
But be warned, it does shrink some so if you put a lot on be sure
to let it cure a couple of days min before top coating.
I piled it on my car but allowed a week in the sun to cure.
It's been 2 1/2 years now and I see no sign of shrinkage.
Looks as good as the day I buffed it.
Waiting a little longer is the key.
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Old 07-22-2009, 06:39 PM
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Thanks, guys.

With my lack of experience, it sounds like 2K is the way to go.

Any advise on regular, high build, or turbo?

I'm not in a hurry and can let it sit for as long as a week at a time after spraying. I'm sure the turbo is worth the $$$ but I'm looking to get the best bang for the buck.
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Old 07-24-2009, 04:54 PM
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Bump for info. Placing order on Monday morning.
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Old 07-25-2009, 01:36 PM
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i have used their regular 2k primer works great. epoxy first then 2k then epoxy as sealer
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Old 07-26-2009, 10:32 AM
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I'm using SPI epoxy as the base, no doubt there.
Looks like I'll go 2K primer after that.

Thanks for the info, guys. Any other advise??
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Old 07-26-2009, 10:42 AM
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If anything just take your time as that makes the difference between a first class job and the other kind..One thing is that I use a flexible metal ruler to lay on the panels to see how I am doing in getting the panel straight..

Generally on first class work I put on my 2 coats of epoxy then my filler..(hopefully the panels have been metal worked to as good as you can get them) then start with my 2k and blocking. I block with 100 grit as this is quicker when getting things straight and then follow with an overall coat of 2k and then some 400 before going to base..Works for me but others may have other ideas..

Sam
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Old 07-27-2009, 08:24 AM
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Am I to understand SPI has a turbo 2k now? I probably shouldnt tell this.....but when I was told about SPI's epoxy being used as a building primer I didnt believe... I've been useing it for a couple years as a base for body work so after checking around I tried it,it worked...and it worked well...so naturaly I tried to see just how far I could abuse it before it failed so I bondo'd up my roof and sanded it with 36 and then lightly with 80,thats it!!!I sprayed three wet coats and let it sit over night,the next day it was still soft but dry enough to sand "lightly" I sanded it flat with 180 and sprayed three more wet,wet coats.It took well over a week to cure..again I sanded it down good with 180...All the 36 scratches were gone!!! For good !!! its been months since I've done this and not one swell showed up,its still just as slick as can be.So when I say SPI epoxy is the best epoxy primer out there I really mean it,I'll never use anything else. also their 2k is good for production and building primer but never saw a need for their high build primer I use bondo for that.
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