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Eastwood After Blast Metal Prep is rated 4.5 out of 5 by 35.
Rated 5 out of 5 by from This Stuff WORKS! I bought a gallon of After Blast as an alternative to using Acetone. It not only works well, but it gives a nice protective coating to the parts I'm going to powder coat. I use it in conjunction with Eastwoods Pre aerosol spray. I place my part in the blast cabinet. After blasting, I wipe it down with Pre. It goes into the oven for out gassing. After it's done and cools down, I finish it off with After Blast. The results are FANTASTIC! This product works so well, I just ordered another gallon to have on hand as a back up. Get it. I dont think you'll be disappointed. It's worth the money if you're looking for nice results!
Date published: 2019-01-26
Rated 5 out of 5 by from Good Stuff! I've been getting more and more into powder coating and was looking for something economical for cleaning and treating and this fit the bill. I've prepped and coated at least a dozen parts now with it and it works well *as long as you wipe it off*. Your part must be a nice even grey color with no dried residue otherwise the powder will have defects or not cover the area at all. Be very careful in tight, hard to reach areas.
Date published: 2018-09-19
Rated 5 out of 5 by from Works as advertised Had my car plastic bead blasted 3 weeks ago. Brought it home and wiped it down a couple of times and still no flash rusting. Pretty amazing since it has been raining and or 80% humidity since I brought it home.
Date published: 2018-08-27
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Can I apply a self-etching primer over the zinc phosphate after it has been fully cured?

Asked by: Gabriel
You will just need to clean the metal with Pre or Acetone, prior to applying the self-etch primer.
Answered by: Bob G
Date published: 2019-08-02

after sand blasting my car i use this after blast to clean it, can i go straight to priming with out scuffiing the metal or is their a step in between ? i read a question that one of you answered that you have to use a wax & gresser remover after?

Asked by: Jean25
The instructions for sanding before priming still remain the same before applying the primer- that depends on the primer itself. This is not an etching product. You do not need to clean the surface with PRE or Acetone before applying your primer unless it has contaminants on the surface. Otherwise- this will promote your paint or primer adhesion so nothing further needs to be done.
Answered by: Kelly H
Date published: 2019-07-28

Can this produce be used as a water treatment during wet / dustless blasting? What would the mixing ratio be?

Asked by: eco prep
Unfortunately this is not the intended use of this product and has not been tested before.
Answered by: Kelly H
Date published: 2019-06-28

I had rally wheels soda blasted, they are steel wheels with chrome centers. Do I have to keep the Eastwood after blast metal prep off the chrome centers for fear it will etch the chrome, damaging it?

Asked by: Bill
We have never tested any of our products with a Chrome plating process for compatibility. We would have to advise you to keep this product off of the chrome plated areas.
Answered by: Kelly H
Date published: 2019-06-13

Ok to use under 2K high build primer?

Asked by: Kyle
This can be used under our Epoxy, Urethane, and Polyester primers without any issues.
Answered by: Kelly H
Date published: 2019-05-20

will this gallon do a Dodge ram cab only

Asked by: stickman
This gallon should be enough for this application.
Answered by: Kelly H
Date published: 2019-05-05

How long will this protect the bare metal from rusting before priming?  

Asked by: Brettsvn
There is no way to gauge this- unfortunately too many variables would play in. As log as it is stored in a controlled environment and not subjected to the elements - it should last several months for you at the least.
Answered by: Kelly H
Date published: 2019-05-01

After wiping down the sand blasting and wiping it down with 11971ZP how long can you leave it in this state before priming is needed? What is a good primer to use when you don't know what paint you will be going with yet?

Asked by: Sam I am
Once the After Blast has fully cured, all you will need to do is scuff up the panel, wipe it with a wax and grease remover. Epoxy Primer would be the best primer as it will accept a more of a verity of finishes.
Answered by: Bob G
Date published: 2019-04-27
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Eastwood After Blast Metal Prep

Eastwood After Blast Metal Prep

Item #11971ZP Brand: Eastwood

Cleans, degreases, etches blasted metal to improve paint adhesion
Quantity: close

In stock

Only $43.99


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Use "After Blast" after blasting or sanding metal, then paint, prime or powder-coat.

  • Spray, wipe and repeat until clean
  • Aqueous cleaners and phosphoric acid clean and etch the metal
  • Also protects against flash corrosion

After Blast cleans, degreases and etches just-blasted or newly-sanded metal to improve adhesion for painting, priming or powder-coating.

More info...
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About Eastwood After Blast Metal Prep

After Blast is designed to clean, degrease and etch freshly blasted or sanded metal prior to painting or powder coating. Use with a plastic spray bottle to liberally apply to the part, wipe and reapply until all contaminants are removed. The blend of aqueous cleaners and phosphoric acid properly cleans, etches the metal and leaves a zinc phosphate coating that is excellent for paint, primer or powder adhesion. Also protects the metal from flash corrosion for extended periods. Use on all your fresh cast iron, steel or aluminum components.


1 gallon


Use after abrasive, soda blasting or sanding/grinding operations to assure of a clean paint ready metal surface.


Use in well ventilated area and wear rubber gloves


made in USA 1 year shelf life


Use on cast iron steel and aluminum to clean and properly etch the metal for coatings. The phosphoric acid will etch the metal and provide an excellent surface etch for paint adhesion. Use on frames, sheet metal engine blocks and suspension components after blasting. Do not apply to painted surfaces, chrome, plastic or glass.

Eastwood Offers Free Lifetime Technical Support

Click here for product SDS information

Attention California Residents - Proposition 65

Proposition 65 Warning WARNING - Cancer and Reproductive Harm -

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