I purchased an aluminum grille quite awhile back and still have not got around to painting it. The grille is made from the T6 aircraft grade aluminum in a billet style setup. I would like to paint this grille, but prefer to avoid the rattle can method and have a professional job done that will actually last with the rest of the paint on the truck. The grille looks similar to the one linked in this image but I can't quite recall the manufacture. http://img.auctiva.com/imgdata/1/7/1...29054438_o.jpg

I originally had planned to have it powder coated, but it seems that this aluminum is prone to softening with the high heat of baking required with powder coating. At this point I'm not really sure how it needs to be prepared or what method taken to have it painted. Does anyone have suggestions that have worked with aluminum in the past?

Thanks,
Alex

 

Our hoods are aluminum right? Prep, paint, and clear coat via body shop

 

Where on earth did you hear that a powder coat bake cycle will soften aluminum? It doesn't get that hot. (It varies by product, but usually around 250 degrees) The higher end billet grill manufacturers P/C their products. I wouldn't think twice about powder coating it.

One thing you should do before refinishing it with whatever method you eventually choose, is to fit it first, as it may require bending or manipulation to get a good fit. It is much better to fit it first, than to have to damage the finish later...........

 

The question arose after visiting many homebuilt aircraft forums and websites. Most of these guys build their frames out of T6 6061 and have discussed the powder coating process. From what I read going above 300 degrees for any amount of time is prone to softening and damage to the metal. (Then again its only a grille not a structural piece but I don't want any flaws in the finish over time) I guess maybe it would depend on the oven baking the powder coat as many of those guys stated most go to 340-360 and you are saying 250? I'm not an expert on painting nor powder coating that's why I wanted to ask here.

Also, great idea about putting it in first. I actually never thought of that so I will be sure to do that.

 

I wouldn't put a truck grill in the same category as airplane panels at all. I doubt the NTSB is gonna come knockin on your door if your grill shows pre-mature signs of corrosion.

Different powder coat products require different "melting points" if you will. The easiest way to know for sure is to contact your local applicators, and ask them what bake temp they use.

P/C is your best option, don't worry too much about the temps. They won't affect what you are doing.