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Old 01-08-2012, 10:03 PM
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Which one to block sand?

I am about ready top paint my first car and need some advise. It is a 68 Newport that was soda blasted about 3 weeks ago. I am going to use a 2k epoxy primer to seal the body. I am then going to use a high build primer on top of that. Sould I block sand the epoxy flat using 320 grit then also block out the high build? I have been told that i can skip sanding the epoxy and just do the high build only.

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Old 01-08-2012, 10:38 PM
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As long as you are in the recoat window on the epoxy go ahead and shoot the blocking primer and then start your blocking..

Sam
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I have tried most all of it and now do what is known to work..
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Old 01-08-2012, 10:47 PM
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Don't forget to neutralize soda
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Old 01-09-2012, 07:46 AM
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Which is the best way to neutaralize the soda. I was going to wipe down with ascetone sand degrease powerwash and wipe down again.
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Old 01-09-2012, 08:43 AM
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soda blasting clean up...........

Hi,if your pressure washer can use soap,use DAWN dish soap,spray all the cracks and crevices very good,then wash with plain water,again using the pressure washer,then dry good,and use compressed air to blow all the crevices.
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Old 01-09-2012, 08:45 AM
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duplicate post
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Old 01-09-2012, 08:48 AM
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Quote:
Originally Posted by Clean62
Which is the best way to neutaralize the soda. I was going to wipe down with ascetone sand degrease powerwash and wipe down again.
Acetone isnt going to do what you want, save your money and don't waste the acetone.

Purple power is a better choice but ------>

Call Barry or Andy at SPI - They will tell you the proper procedure to get rid of the soda, doesn't matter if you buy from them or not.

I don't know why you wouldn't though, their product is awesome & priced right too.
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Old 01-09-2012, 01:17 PM
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Use water/vinegar solution
http://www.youtube.com/user/swrnc?fe.../2/2tikM_HqkqM
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Old 01-10-2012, 10:09 PM
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You all have helped out a lot with information. I was going to do it this weekend but weather here is going to dip into the 60s so no go. Now if there is something I can do about my nerves. Still nervous as hell but just gotta do it.
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Old 01-11-2012, 01:07 AM
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What ive learned and has been working for me is to shoot a couple coats of epoxy with a different color of your high build sanding primer. When blocking the car you can use the difference in the epoxy color underneath to let you know when to stop. Of coarse you should also use a guide coat on top of your sanding primer but this has helped me from going down to the metal and having to re-shoot those areas with epoxy again
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Old 01-11-2012, 05:09 PM
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Also.. get some SPI Eurethane High Build Primer. It builds high and easy to block sand..
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Old 01-13-2012, 11:33 PM
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While you don't need to block your epoxy, I do, only so I can find the low spots so I can either do more bump work or fill.
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