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06-22-2007, 07:32 AM
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#1
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Islay - 63 O.
1963 26' Overlander
Montreal
, -
Join Date: May 2005
Posts: 581
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Polishing : too much heat on alu - effect?
what the alu will look like if too much heat is provide during coumpound?
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Canadian Atlantic Unit Past President
Protect your dream from others and first yourself...
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06-22-2007, 07:47 AM
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#2
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Rivet Master
1956 22' Flying Cloud
Durango
, Colorado
Join Date: Sep 2002
Location: 1975 25' Tradewind
Posts: 3,491
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The aluminum will turn brown
__________________
1956 Flying Cloud
Founder :
Four Corners Unit
Albuquerque National Balloon Fiesta
Rally
Vintage Trailer Academy - Formerly the original
restoration rally
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06-22-2007, 08:08 AM
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#3
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Islay - 63 O.
1963 26' Overlander
Montreal
, -
Join Date: May 2005
Posts: 581
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I have few spot like that, is there something to do or am I F...
__________________
Canadian Atlantic Unit Past President
Protect your dream from others and first yourself...
Few rolling wheels to make our planet a house.
A 1/5th of her that I own.
TAC# : QC-1
my blog
https://rvcampreview.com
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06-22-2007, 08:10 AM
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#4
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Rivet Master
1956 22' Safari
2015 27' Flying Cloud
Vintage Kin Owner
Conifer/Evergreen
, Colorado
Join Date: Feb 2002
Posts: 12,702
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Sorry to say you are SOL unless you replace the panel.
Yep, a darker grey/brown spot that you may not see until a day or two later. No matter how much you polish, it won't go away...it grows. Basically you burn through the purer aluminum layer and get down to the less pure stuff that oxides quickly. We have one 2"x1-1/2" or so spot by a scratch on an access door we were trying to get out...we use it as an example of "what not to do" when at rallys with a polishing demo. It's a beauty mark...actually, nobody really ever notices it until we point it out.
Shari
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06-22-2007, 08:14 AM
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#5
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Rivet Master
1956 22' Flying Cloud
Durango
, Colorado
Join Date: Sep 2002
Location: 1975 25' Tradewind
Posts: 3,491
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The polishing matra is slow speed, keep things moving and a little dab will do ya.....
And you should not apply much presure on the machine - its really a zen thing - not hard at all, just time consuming.
Ken J
__________________
1956 Flying Cloud
Founder :
Four Corners Unit
Albuquerque National Balloon Fiesta
Rally
Vintage Trailer Academy - Formerly the original
restoration rally
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06-22-2007, 08:29 AM
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#6
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Islay - 63 O.
1963 26' Overlander
Montreal
, -
Join Date: May 2005
Posts: 581
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I was thinking it was not fair to have such thing, cause I go really slow, I do like 5 pass to get the bright not in a row on the same spot, but one after another.
So I tried to clean up nicely the alu with a good amount of mineral spirit. And guess what it was just some polish residue. I can't see anything now...
I don't know if the panel felt any heat but I did...
Time for a break...
thank you for your help.
BTW InsideOut do you have a pic of your brown spot...
__________________
Canadian Atlantic Unit Past President
Protect your dream from others and first yourself...
Few rolling wheels to make our planet a house.
A 1/5th of her that I own.
TAC# : QC-1
my blog
https://rvcampreview.com
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06-22-2007, 08:39 AM
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#7
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Rivet Master
1956 22' Flying Cloud
Durango
, Colorado
Join Date: Sep 2002
Location: 1975 25' Tradewind
Posts: 3,491
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Doesn't sound like you burned it to me - one thought is if you are needing to use a lot of mineral spirits you may be using too much polish - I use Nuvite and most of the polish comes off and I just wipe it with a clean cloth - the only place I've used mineral spirits is around the rivets
Ken J
__________________
1956 Flying Cloud
Founder :
Four Corners Unit
Albuquerque National Balloon Fiesta
Rally
Vintage Trailer Academy - Formerly the original
restoration rally
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06-22-2007, 10:32 AM
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#8
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Rivet Master
1975 31' Sovereign
Oxford
, Mississippi
Join Date: Sep 2005
Posts: 874
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Another good thing to use is corn starch. I did not want to use mineral spirits around the windows in fear it would affect my sealing I did last year. The corn starch cleans everything great, fast, and cheap.
__________________
Becky
75 Sovereign (Peppy)
03 Chevy HD (lil Peppy)
Air# 9552
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06-22-2007, 12:29 PM
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#9
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Islay - 63 O.
1963 26' Overlander
Montreal
, -
Join Date: May 2005
Posts: 581
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post more pics tonight, some are on another post "first step...."
__________________
Canadian Atlantic Unit Past President
Protect your dream from others and first yourself...
Few rolling wheels to make our planet a house.
A 1/5th of her that I own.
TAC# : QC-1
my blog
https://rvcampreview.com
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06-24-2007, 09:38 AM
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#10
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Islay - 63 O.
1963 26' Overlander
Montreal
, -
Join Date: May 2005
Posts: 581
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I took a pic of what could worry the other day.
You can see a kind of ghost...
I need to look with a angle under a certain light to see it.
the alu on these spots look like the alu around the window where I can't really go with the polisher.
What could it be... is it the bad brown?
If it is I really don't get why. As yesterday I had to go deep into a big dent so I did put lot of pressure, I went strong on that point and it never get any brown at all and again I was really hard on it.
Which means if it's heated alu on the pic the spot I was working on the door should have melt in comparison.
Any idea?
thank you
__________________
Canadian Atlantic Unit Past President
Protect your dream from others and first yourself...
Few rolling wheels to make our planet a house.
A 1/5th of her that I own.
TAC# : QC-1
my blog
https://rvcampreview.com
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06-24-2007, 10:19 AM
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#11
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Rivet Master
1975 31' Sovereign
Oxford
, Mississippi
Join Date: Sep 2005
Posts: 874
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I have that to, hope it's not what we think it may be. Or it could be the presence of Wally
__________________
Becky
75 Sovereign (Peppy)
03 Chevy HD (lil Peppy)
Air# 9552
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06-24-2007, 08:30 PM
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#12
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Rivet Master
1956 22' Flying Cloud
Durango
, Colorado
Join Date: Sep 2002
Location: 1975 25' Tradewind
Posts: 3,491
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If I can tell what I'm looking at - it looks like some normal discoloration that you get from the heavy compounds and as you go to final coat it brings up the shine - but not sure - it looks more like a blackish color than brown - again that you get from heavy compounds.
Ken J
__________________
1956 Flying Cloud
Founder :
Four Corners Unit
Albuquerque National Balloon Fiesta
Rally
Vintage Trailer Academy - Formerly the original
restoration rally
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06-27-2007, 09:21 AM
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#13
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3 Rivet Member
Currently Looking...
Columbus
, Ohio
Join Date: Mar 2006
Posts: 180
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Quote:
Originally Posted by dufferin
I took a pic of what could worry the other day.
You can see a kind of ghost...
I need to look with a angle under a certain light to see it.
the alu on these spots look like the alu around the window where I can't really go with the polisher.
What could it be... is it the bad brown?
If it is I really don't get why. As yesterday I had to go deep into a big dent so I did put lot of pressure, I went strong on that point and it never get any brown at all and again I was really hard on it.
Which means if it's heated alu on the pic the spot I was working on the door should have melt in comparison.
Any idea?
thank you
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I've noticed the same thing after I polished. In a certain raking light, and in certain areas, I can see ghosts in the aluminum. It's strange. I tried polishing those areas again, but it's still there. I don't think it's burned, but also cannot explain why. Here's a pic of what it looks like in broad daylight. It's hard to believe there can be ghosts in a finish that bright, but there is. I've considered trying an acid wash on those areas, but haven't as of yet. I do know that there is one small area in the front that won't polish well at all. It's covered in very small dings from rocks kicking up, so I'd guess the alcad
is gone, or at least damaged pretty bad, as it is brownish. Good luck, and please post back if you find the solution! --dave
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06-27-2007, 08:24 PM
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#14
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Islay - 63 O.
1963 26' Overlander
Montreal
, -
Join Date: May 2005
Posts: 581
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I am still at compound process. I'll see if it goes out or fade out when I start with the cyclo.
I'll let you know here.
BTW I tried the cornstarch instead of mineral spirit, and I have to say that it's works perfect. So it's not only an option it the first choice to go with to clean up the polish residue.
__________________
Canadian Atlantic Unit Past President
Protect your dream from others and first yourself...
Few rolling wheels to make our planet a house.
A 1/5th of her that I own.
TAC# : QC-1
my blog
https://rvcampreview.com
|
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06-30-2007, 06:22 PM
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#15
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Rivet Master
1975 31' Sovereign
Oxford
, Mississippi
Join Date: Sep 2005
Posts: 874
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Quote:
Originally Posted by dufferin
I am still at compound process. I'll see if it goes out or fade out when I start with the cyclo.
I'll let you know here.
BTW I tried the cornstarch instead of mineral spirit, and I have to say that it's works perfect. So it's not only an option it the first choice to go with to clean up the polish residue.
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Yes I love the corn starch!!!!!! Wal-Mart must think I bake a whole lot or have a bad bad diaper rash, I bought 6 boxes the other day.
__________________
Becky
75 Sovereign (Peppy)
03 Chevy HD (lil Peppy)
Air# 9552
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07-02-2007, 07:39 AM
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#16
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3 Rivet Member
Vintage Kin Owner
Long Beach
, California
Join Date: Nov 2006
Posts: 151
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Quote:
Originally Posted by dufferin
..snip...
BTW I tried the cornstarch instead of mineral spirit, and I have to say that it's works perfect. So it's not only an option it the first choice to go with to clean up the polish residue.
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When using cornstarch for clean up, do you use it in the powder form, or mix it with water? I know dumb question, but I had to ask.
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07-03-2007, 01:40 PM
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#17
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Rivet Master
1975 31' Sovereign
Oxford
, Mississippi
Join Date: Sep 2005
Posts: 874
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I just dust my micro fiber cloth with it and wipe over, no water.
__________________
Becky
75 Sovereign (Peppy)
03 Chevy HD (lil Peppy)
Air# 9552
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07-03-2007, 10:20 PM
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#18
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Rivet Master
1951 21' Flying Cloud
1960 24' Tradewind
West Coast
, BC
Join Date: Feb 2005
Posts: 3,790
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Quote:
Originally Posted by Streamin 65
I've noticed the same thing after I polished. In a certain raking light, and in certain areas, I can see ghosts in the aluminum. It's strange. I tried polishing those areas again, but it's still there. I don't think it's burned, but also cannot explain why. Here's a pic of what it looks like in broad daylight. It's hard to believe there can be ghosts in a finish that bright, but there is. I've considered trying an acid wash on those areas, but haven't as of yet. I do know that there is one small area in the front that won't polish well at all. It's covered in very small dings from rocks kicking up, so I'd guess the alcad
is gone, or at least damaged pretty bad, as it is brownish. Good luck, and please post back if you find the solution! --dave
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You have no idea how the picture with the shine you have causes me so much pain.
Now that my wife has seen this guess what she's expecting............
Darn, let the games begin.
Barry
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07-04-2007, 04:09 AM
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#19
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Islay - 63 O.
1963 26' Overlander
Montreal
, -
Join Date: May 2005
Posts: 581
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Quote:
Originally Posted by safari57
You have no idea how the picture with the shine you have causes me so much pain.
Now that my wife has seen this guess what she's expecting............
Darn, let the games begin.
Barry
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Why do you think I am on it now...
__________________
Canadian Atlantic Unit Past President
Protect your dream from others and first yourself...
Few rolling wheels to make our planet a house.
A 1/5th of her that I own.
TAC# : QC-1
my blog
https://rvcampreview.com
|
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