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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Some that are sheet metal specialist. 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. Keep the part wet between alumiprep and alodine.
You will find that it takes longer to get that even colour you are looking for. It will come out with a “chalky” tone too it. They said 2 reasons.
I ask akumniprep about preping and primeing when the metal has an alkalad surface. It will turn out fine. A few suggestions about it’s use: Don’t leave the part in the alodine too long.
This all depends upon your definition of “durable barrier” between substrate and environment. No registered users and 1 guest.
Alumnipprep the normally recomended cleaner is Alumiprep Just follow the instructions for application. Any one have experience in using this cleaner, or can they recommend another cleaner and surface prep soluiont. It would seem to me that theres no need to worry about converting the metal where the alclad is in good shape.
So why scrape it away and scuff it up just to replace it with an alclad generated coating? The alumiprep leaves the aluminum bare, and it will oxidize as soon as the air hits it. Don’t leave the part in the alumiprep too long. If you consider the alclad durable enough, then by all means leave it alone! The reason I asked was to make sure my next statement or question wasnt based on incorrect data.
The bottle states not to use on high copper alloy alumbiprep. If you are doing small parts in a “bath”, remember that alodine does not last forever.
Who is online Users browsing this forum: Only time will tell who is right. I was thinking that there was some more technical reason that people were prepping the alclad.
Listing: Alodine & Alumniprep
Nothing wrong with that as far as I know, but if you get it right, the part almost looks like it’s anodized. I think it comes down to your individual plans for your specific aircraft. I guess metal prep is a real sensitive area. Alclad is a top layer of pure aluminum applied to the for corrosion protection. How are you guys disposing alumniptep your spent alumaprep and alodine?
Using Alumiprep 33 before Alodine –
If the part is starting to turn dark, that’s too long. You’re eating up metal at that point. The alodine is really needed where there is no corrosion protection. It is pretty much all I am doing. Then they put a 2 part epoxy primer on. First to cover the scratches and the other is where 2 pieces of metal are put together mosture can get traped between the pieces.
This is the stuff of primer wars. Therin lies the variable of what each builder considers the best, most durable barrier for their airplane and it’s intened useage. Then you have alumniiprep temper number, ie.
You cannot get the Alodine to work on without first treating with the Alumaprep They use prep 33 and alodine all the time.
Alumiprep Metal Cleaner & Alodine Chrome Conversion Coating – Chief Aircraft Inc.
After you rinse off the alumiprep, don’t let the part dry off. The question, why scuff up or “prep” alclad before treating it with alodine.
These suggestions are purely based on my own years of trial and lots of error.