Alumlprep 33 is an acidic metal cleaner and conditioner expressly compounded for aluminium. Prepares aluminium and its alloys for painting or welding. Detailed Product Description: Alumiprep 33® is a non-flammable phosphoric acid-based cleaner, brightener. and pre-paint conditioner for aluminum. Alumiprep. CERTIFICATE OF CONFORMANCE INCLUDED Alumiprep 33® is a non- flammable phosphoric acid-based cleaner, brightener and pre-paint conditioner for.

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First to cover the scratches and the other is where 2 pieces of metal are put together mosture can get traped between the pieces. You will alumnirpep that it takes longer to get that even colour you are looking for.

I was thinking that there was some more technical reason that people were prepping the alclad.

Using Alumiprep 33 before Alodine –

The alodine is really needed where there is no corrosion protection. How are you guys disposing of your spent alumaprep and alodine? If the part is starting to turn dark, that’s too long.

You cannot get the Alodine to work on without first treating with the Alumaprep After you rinse off the alumiprep, don’t let the part dry off. Alclad is a top layer of pure aluminum applied to the for corrosion protection. They said 2 reasons.


Listing: Alodine & Alumniprep

They use prep 33 and alodine all the time. The alumiprep leaves the aluminum bare, and it will oxidize alumnipfep soon as the air hits it. But the normally recomended cleaner is Alumiprep Keep the part wet between alumiprep and alodine.

Who is online Users browsing this forum: A few suggestions about it’s alunmiprep The bottle states not to use on high copper alloy aluminum. You’re eating up metal at that point. Don’t leave the part in the alodine too long. If you consider the alclad durable enough, then by all means leave it alone! It is pretty much all I am doing. Then you have the temper number, ie. I ask them about preping and primeing when the metal has an alkalad surface.

It will come out with a “chalky” tone too it.

It would seem to me that theres no need to worry about converting the metal where the alclad is in good shape. Some that are sheet metal specialist. Then they put a 2 part epoxy primer on. I understand the religious debates, but there doesnt seem to be many “just clean it and dump it in alclad for a few minutes” believers out there. Nothing wrong with that as far as I know, but if you get it right, the part almost looks like it’s anodized.


The question, why scuff up or “prep” alclad before treating it with alodine. No registered users and 1 guest.

I guess metal prep is a real sensitive area. This all depends upon your definition of “durable barrier” between substrate and environment.

Any one have experience in using this cleaner, or can they recommend another cleaner and surface prep soluiont. So why scrape it away and scuff it up just to replace it with an alclad generated coating? Just follow the instructions for application.