Author Topic: Anodized Aluminum - Good Result  (Read 834 times)

marku

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Re: Anodized Aluminum - Good Result
« Reply #15 on: 10 October 2021, 08:13 AM »
The sandpaper method does work although it is hard work. When I refinished the doors I thought that I couldn't put the anodised trim back as it really was in a poor state badly scratched. Tried to get some of it done professionally but they would not take it on. So with a deep breath tried sandpaper starting with 60 grit. Hard to get the anodised layer of and to remove the scratches. Then worked all the way up to 2500g wet and then metal polishing cream. Finished off with a clear brass lacquer applied with a very fine varnish brush. Looks OK but it is as good as the effort put in and takes along time. 
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john erbe

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Re: Anodized Aluminum - Good Result
« Reply #16 on: 15 October 2021, 03:45 PM »
The guy up there in WA, MercedesSource, had a info video on this topic a few years back experimenting with various techniques.

rparker

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Re: Anodized Aluminum - Good Result
« Reply #17 on: 16 October 2021, 05:35 AM »
The guy up there in WA, MercedesSource, had a info video on this topic a few years back experimenting with various techniques.

Yes, my understanding is that his method is using his customized magic paste which is designed to balance the removal of the anodization and shine the underlying aluminum. It'll work but you'll have to apply metal wax quite often to keep the shine up.

Cheers.

Ryan
77' W116 280S, 4-Speed Manual

Flogrates

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Re: Anodized Aluminum - Good Result
« Reply #18 on: 16 October 2021, 05:12 PM »
Having spent a long time as a truck driver I've spent an equally long time polishing.

I don't think you'll ever get it out. But, starting at like 240grit working your way up to say 1200 then use a 1800rpm buffer should have it pretty shiney.

It's just incredibly time consuming. My last truck was a weekend job for the bull bar.

john erbe

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Re: Anodized Aluminum - Good Result
« Reply #19 on: 17 October 2021, 10:51 AM »
If i recall the product he used was Wipe-On Poly by Minwax applied with a  sander. I applied with a coarse pad following with soft cloth. Did a good job getting out the cloudiness. You're in effect buffing out and applying a poly coating.

Eyeman

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Re: Anodized Aluminum - Good Result
« Reply #20 on: 17 October 2021, 10:09 PM »
Glad I read this before I started messing with my trim while I'm doing a strip then repaint.  Most of my trim is in very good shape largely because the prior owner overpainted much of it in 80s AMG style.  I carefully stripped the overpaint off in the mid 90s and have kept the car covered since.  But I do have some scratches to tackle.

On home chroming/anodizing, etc, that seems very difficult IMO.  I had a dedicated oven back in the day for chrome powder coating.  Works pretty well, and is easy.  I have a 190SL that maybe I'll eventually restore.  If I do, I'll get me another oven.

rparker

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Re: Anodized Aluminum - Good Result
« Reply #21 on: 25 November 2021, 02:37 AM »
I base this on some posts I've read previous unfortunately can't remember where at the moment. I also have my brother's W126 which has been sitting in a basement almost all its life, barely driven that is almost a time capsule. The trim is immaculate and the finish is indeed a fine satin (not from going milky, because it is consistent throughout the trim and on all trim pieces) , but having said that it is very near mirror finish, but just not quite there.

Thank you for the information on the W111/112 coupes, again good knowledge to know as these become so incredibly priced lately.

You've spent a lot of time on me, and I appreciate that sincerely. But some photos to illustrate your point would be very much appreciated. I'd also try to look up the old posts that have led me to the conclusion to show them.
Cheers.I
Ryan

We can't use a 30+ year old car for comparison to how the trim looked when new.  The trim will loose luster over the years regardless of mileage.  It's more so a matter of time rather than miles or having been outside or not.  Factors that also influence this range from the trim's exposure to acid rain, salty air, damp basements/climates, what kind of soap is used to wash the car with, how abrasive the sponge or cleaning pad is, how abrasive the drying towel is,, etc.  You see where I'm going. 

In the pictures below I've displayed 4 pieces.  The top piece is a new old stock trunk handle for a W126.  The second piece down from the top is a lower trim piece from the rear glass from a W116 that has been clouded from being out in the elements 40+ years.  The third piece down from the top is a new old stock flag staff holder that is actual chromium plated, and is the piece being used for comparison.  The last piece, the piece on the bottom, is a new old stock W116 trim piece that goes around one of the door windows.   

In the last picture I show a close up of the new old stock anodized aluminum and an actual chromium plated piece. 

As you can see, the aluminum trim looks almost like a piece of chrome.  I hope this rids any and all ideals about the pieces having been satin or dull when new.

Thanks for the reference points especially the NOS rear boot lid for the W126 and the base of the flag pole for comparison. Most of the anodized trim on my brother's car if of the NOS standard. I do believe we are on the same page with regards to the fineries of the pieces however I'd like to clarify that when I say satin, its a bright satin just like what you have shown, far from matte. A mirror finish (to me) would be your flag pole base. The ultimate purpose of this differentiation is that I want to try get the trim of the W116 mirror finish. It's my Everest however difficult it maybe.

FYI, did you know that Rolls Royce Phantom door handles are aluminum and chrome plated, probably used some new technology to bond the two metals in a buffer of copper and nickel. Something worth researching for me.

Cheers.

Ryan
77' W116 280S, 4-Speed Manual

UTn_boy

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Re: Anodized Aluminum - Good Result
« Reply #22 on: 25 November 2021, 08:51 AM »
I base this on some posts I've read previous unfortunately can't remember where at the moment. I also have my brother's W126 which has been sitting in a basement almost all its life, barely driven that is almost a time capsule. The trim is immaculate and the finish is indeed a fine satin (not from going milky, because it is consistent throughout the trim and on all trim pieces) , but having said that it is very near mirror finish, but just not quite there.

Thank you for the information on the W111/112 coupes, again good knowledge to know as these become so incredibly priced lately.

You've spent a lot of time on me, and I appreciate that sincerely. But some photos to illustrate your point would be very much appreciated. I'd also try to look up the old posts that have led me to the conclusion to show them.
Cheers.I
Ryan

We can't use a 30+ year old car for comparison to how the trim looked when new.  The trim will loose luster over the years regardless of mileage.  It's more so a matter of time rather than miles or having been outside or not.  Factors that also influence this range from the trim's exposure to acid rain, salty air, damp basements/climates, what kind of soap is used to wash the car with, how abrasive the sponge or cleaning pad is, how abrasive the drying towel is,, etc.  You see where I'm going. 

In the pictures below I've displayed 4 pieces.  The top piece is a new old stock trunk handle for a W126.  The second piece down from the top is a lower trim piece from the rear glass from a W116 that has been clouded from being out in the elements 40+ years.  The third piece down from the top is a new old stock flag staff holder that is actual chromium plated, and is the piece being used for comparison.  The last piece, the piece on the bottom, is a new old stock W116 trim piece that goes around one of the door windows.   

In the last picture I show a close up of the new old stock anodized aluminum and an actual chromium plated piece. 

As you can see, the aluminum trim looks almost like a piece of chrome.  I hope this rids any and all ideals about the pieces having been satin or dull when new.

Thanks for the reference points especially the NOS rear boot lid for the W126 and the base of the flag pole for comparison. Most of the anodized trim on my brother's car if of the NOS standard. I do believe we are on the same page with regards to the fineries of the pieces however I'd like to clarify that when I say satin, its a bright satin just like what you have shown, far from matte. A mirror finish (to me) would be your flag pole base. The ultimate purpose of this differentiation is that I want to try get the trim of the W116 mirror finish. It's my Everest however difficult it maybe.

FYI, did you know that Rolls Royce Phantom door handles are aluminum and chrome plated, probably used some new technology to bond the two metals in a buffer of copper and nickel. Something worth researching for me.

Cheers.

Ryan

Be that as it may, I still don't think it's a good idea to chrome plate aluminum, especially the trim on a W116.  It'll cause fitment issues due to the extra thickness. 
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floyd111

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Re: Anodized Aluminum - Good Result
« Reply #23 on: 26 November 2021, 04:41 PM »
Well, I would think that if he's able to increase things to a point of no fitment, that would be a fantastic thing. I had aluminum shock absorber parts sent for chrome coating to various large specialists in Taiwan, and as per their honest warning, the best job available was a thin layer that looked excellent but was very sensitive to scratches. There are thus clear limits to that process.
It also brought out surface imperfections in the otherwise perfectly CNC-ed and forged parts that had been previously hidden.
The advice I got, and already knew, was that a hard-anodizing of aluminum is more durable than the process where you add chrome to aluminum.
The sheen is also very different. Not just different from the original trim, but also different from the old-skool chrome parts since the chemistry has changed over the years, and sharp eyes can see the difference.
After that tryout, I have made full circle. When the time comes I will send my trim to the anodize factory.