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Eastwood After Blast - Metal Prep is rated 4.5556 out of 5 by 18.
Rated 4 out of 5 by from Effective but potent! This stuff works as advertised. Spray outside where ventilated. Tends to remove galvanized coating that my bead blast won't lift, so be careful. Also bubbles and gets hot when spraying on magnesium parts. I'm not being negative - this stuff is just strong. >^..^<
Date published: 2010-08-07
Rated 5 out of 5 by from MUST HAVE in your shop Do yourself a favor and buy a good spray bottle and fill it (AND MARK IT!!) with this stuff. You will use less, cover more evenly and find yourself using it all the time. Blasting or not blasting you will find uses for it!- this is the best item Eastwood sells.
Date published: 2014-01-20
Rated 5 out of 5 by from Excellent! I use this stuff any time I'm painting steel, regardless of what paint I choose. GP is right, I believe a water rinse is in order. One time I didn't and it affected the paint. Every other time I water rinse and the adhesion is great!
Date published: 2013-08-03
Rated 5 out of 5 by from Great stuff! Yes has a strong odor, follow directions. I have many small items to blast, this is a great way to get them all ready and keep them in good condition prior to painting. It goes a long way. Highly recommended!
Date published: 2010-08-19
Rated 5 out of 5 by from great product Product does exactly what you need after blasting. I use it after grinding also and works well. Turns you metal grayish color when it finishes drying and is ready to coat.
Date published: 2010-08-31
Rated 5 out of 5 by from Good Product The first step to a good paint job is prep work and this stuff is a must. Cleans and etches bare steel for paint and really gets it to adhere well. May sound pricey but I only used about a quarter of the gallon on an entire frame and that was using generously.
Date published: 2012-04-05
Rated 3 out of 5 by from works good, if you can get it. I've been using this for years, and it works great. Under powdercoat, under paint..etc..
Date published: 2013-06-13
Rated 5 out of 5 by from The product is great!@! The problem is like I stated in my last review its to expensive. So yesterday I saw it on sale and I thought great I'll get two gallons, dwell I came back today and the sale is off I was just to busy to place the order at that time. My suggestion is put in plan site SALE FOR 24 HR ONLY and I bet you would sale a lot more, the stuff works perfect. .
Date published: 2015-02-10
Rated 5 out of 5 by from Great product Bought about a month ago for restoring a tractor. The stuff works very well after sandblasting and sanding. It is a very strong acid that coats the metal very well.
Date published: 2015-04-19
Rated 5 out of 5 by from This stuff works! Use Afterblast on cromoly steel bicycle frames. After cleaning and degreasing, I spray on inside and outside of tubing. Even after rinsing with water, bare frame stays free from flash rust until I hand it off to my painter. Great product.
Date published: 2015-01-18
  • 2015-04-24T09:12CST
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Eastwood After Blast - Metal Prep

Item #11971ZP Brand: Eastwood

Cleans, degreases, etches blasted metal to improve paint adhesion


Use "After Blast" after blasting or sanding metal, then paint, prime or powder-coat After Blast cleans, degreases and etches just-blasted or newly-sanded metal to improve adhesion for painting, priming or powder-coating.
  • Spray, wipe and repeat until clean
  • Aqueous cleaners and phosphoric acid clean and etch the metal
  • Zinc phosphate coating improves paint, primer or powder adhesion
  • Also protects against flash corrosion

More info...

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.

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