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#21
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Preserving polished aluminum
On Mon, 31 Jul 2017 15:46:41 +1000, James
wrote: On 31/07/17 12:54, John B. wrote: The alodine I have used to coat aircraft parts gave a yellowish tint to the finished part. I guess it was designed as a preservative, not a beautifier :-) Both form a barrier to further corrosion, but alodine is a conductive coating where as anodized is insulative. Also alodine is easy to scratch, where as anodized finish is harder. Alodine is available in different colours, IIRC. Ah, I didn't know that. I never actually used it a great deal but back then it was a yellowish and rather thin liquid that we dipped or painted any raw machined aluminum things we made with. I'll research it a bit more. If there is a clear version then it would probably work well. -- Cheers, John B. |
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#22
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Preserving polished aluminum
On Mon, 31 Jul 2017 16:01:24 +0700, John B.
wrote: On Mon, 31 Jul 2017 15:46:41 +1000, James wrote: On 31/07/17 12:54, John B. wrote: The alodine I have used to coat aircraft parts gave a yellowish tint to the finished part. I guess it was designed as a preservative, not a beautifier :-) Both form a barrier to further corrosion, but alodine is a conductive coating where as anodized is insulative. Also alodine is easy to scratch, where as anodized finish is harder. Alodine is available in different colours, IIRC. Ah, I didn't know that. I never actually used it a great deal but back then it was a yellowish and rather thin liquid that we dipped or painted any raw machined aluminum things we made with. I'll research it a bit more. If there is a clear version then it would probably work well. After James' post I did a little research on protective aluminum coatings relating to the aircraft industry and there are hordes of them. There is even a Boeing T-9 that you spray on and is supposed to penetrate all the nooks and crannies and turn to wax in 5 or 5 days. (sounds like a super chain lube :-) -- Cheers, John B. |
#23
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Preserving polished aluminum
On 7/31/2017 2:49 AM, John B. wrote:
On Sun, 30 Jul 2017 22:44:16 -0400, Frank Krygowski wrote: On 7/30/2017 10:30 PM, John B. wrote: On Sun, 30 Jul 2017 12:17:55 -0700, Jeff Liebermann wrote: On Sun, 30 Jul 2017 13:14:42 -0400, Frank Krygowski wrote: I remember when the pre-Rodale _Bicycling!_ magazine had an article by Fred DeLong on how to anodize bike parts at home. IIRC, he used a 12V car battery as a power source. Not that I ever did it. "Anodizing Aluminum Bicycle Components" http://www.nonlintec.com/anodizing/ There are some additional interesting links near the bottom of the page. Mo http://www.bryanpryor.com/anodizing/ http://astro.neutral.org/anodise.shtml "Tutorial: Polishing Bicycle Parts" http://theradavist.com/2009/10/tutorial-polishing-bicycle-parts/ Not to be snooty but I've been polishing things for a lot of years now, with the proper equipment :-) Those were the days a person could frequently learn something from a bike magazine. Now it's mostly which bike you MUST buy this month, or which shorts make your legs look sexiest. Hmmm... I should read some of that. After a triple bypass operation, where the surgeons borrowed a vein from my leg, I could use some advice on sexy leg fashions and camouflage. Riding with one leg in shorts, and the other in full length pants, doesn't seem to attract the ladies. In some societies scars were a compliment to male beauty. Drivel: The same thing happened with Home Power Magazine: https://www.homepower.com Originally (1987), it was full of do-it-thyself articles. However, as grid tied solar became more popular, it's now mostly product reviews, code compliance, and politics. I still subscribe, but I sometimes wonder why I bother. The price of success is pollution. A friend recently recommended "Popular Mechanics" magazine. A publication that once printed articles about building your own 60 HP Ford powered midget racer and how to build an arc welder out of an aircraft alternator, and now publishes articles entitled "does it hurt to pee on your lawn". But I do believe that the "modern" (would one say?) type of articles reflect the interests of the readers. How many people would leave the comfort of the air conditioned Television Room and the 60 inch TV to actually get their hands dirty building a midget racer.... or an arc welder? (Or even know what an arc welder is?) But the thought comes to mind, are Modern Americans actually intent on discovering whether one should "pee on the lawn", or not? Sufficiently so that a national magazine would publish an article concerning what dirty little boys used to do, with no lessons whatsoever? One 30-something man that I know is remarkably unschooled in technical or mechanical things. He recently started reading Popular Mechanics. I must say, it seems to work for him. IMO, the magazine is better than it was about ten years ago. It seems to have lost some of its macho attitude, and seems to have added a bit more on how to do things. It's inspired him to do a few fabrication projects that turned out pretty well. I can't comment on the magazine as the last previous issue that I had read was perhaps 15, or more, years ago. As my memory was of a magazine perhaps 1/2 inch thick with all kinds of detailed how to build, articles and the issue I read told me how to nail triangular molding at the edge of a ceiling (something I'd know since I was a kid) I gave up in disgust. The "pee on the lawn"issue I read after a friend recommended it the other day and I've now book marked the site for occasionally reading. He seems to like the articles where they disassemble some mechanical item (like maybe a pressure washer) and explain what's inside. And the final pages now feature something a dad can make with his kid, which is a good thing. They've added some stuff that appeals to "foodie" tastes, as well. One of the problems is that I've been working around mechanical devices since I was about 12 years old and while a pressure washer might be a mystery to some I can pretty well guess what must be inside the thing by seeing what it does. Well, some of us here are A) pretty damned old, and B) very experienced with mechanical and/or electrical things. It's unlikely a mass market magazine is going to teach us much. Bicycling parallel: I've got a foolishly large collection of bicycling books. Back in the 1970s, there weren't as many on the market, but I bought every one I could find. Gradually I realized that I was learning less and less from each one, simply because there was less and less I didn't already know. -- - Frank Krygowski |
#24
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Preserving polished aluminum
On Mon, 31 Jul 2017 07:56:41 -0400, Frank Krygowski
wrote: On 7/31/2017 2:49 AM, John B. wrote: On Sun, 30 Jul 2017 22:44:16 -0400, Frank Krygowski wrote: On 7/30/2017 10:30 PM, John B. wrote: On Sun, 30 Jul 2017 12:17:55 -0700, Jeff Liebermann wrote: On Sun, 30 Jul 2017 13:14:42 -0400, Frank Krygowski wrote: I remember when the pre-Rodale _Bicycling!_ magazine had an article by Fred DeLong on how to anodize bike parts at home. IIRC, he used a 12V car battery as a power source. Not that I ever did it. "Anodizing Aluminum Bicycle Components" http://www.nonlintec.com/anodizing/ There are some additional interesting links near the bottom of the page. Mo http://www.bryanpryor.com/anodizing/ http://astro.neutral.org/anodise.shtml "Tutorial: Polishing Bicycle Parts" http://theradavist.com/2009/10/tutorial-polishing-bicycle-parts/ Not to be snooty but I've been polishing things for a lot of years now, with the proper equipment :-) Those were the days a person could frequently learn something from a bike magazine. Now it's mostly which bike you MUST buy this month, or which shorts make your legs look sexiest. Hmmm... I should read some of that. After a triple bypass operation, where the surgeons borrowed a vein from my leg, I could use some advice on sexy leg fashions and camouflage. Riding with one leg in shorts, and the other in full length pants, doesn't seem to attract the ladies. In some societies scars were a compliment to male beauty. Drivel: The same thing happened with Home Power Magazine: https://www.homepower.com Originally (1987), it was full of do-it-thyself articles. However, as grid tied solar became more popular, it's now mostly product reviews, code compliance, and politics. I still subscribe, but I sometimes wonder why I bother. The price of success is pollution. A friend recently recommended "Popular Mechanics" magazine. A publication that once printed articles about building your own 60 HP Ford powered midget racer and how to build an arc welder out of an aircraft alternator, and now publishes articles entitled "does it hurt to pee on your lawn". But I do believe that the "modern" (would one say?) type of articles reflect the interests of the readers. How many people would leave the comfort of the air conditioned Television Room and the 60 inch TV to actually get their hands dirty building a midget racer.... or an arc welder? (Or even know what an arc welder is?) But the thought comes to mind, are Modern Americans actually intent on discovering whether one should "pee on the lawn", or not? Sufficiently so that a national magazine would publish an article concerning what dirty little boys used to do, with no lessons whatsoever? One 30-something man that I know is remarkably unschooled in technical or mechanical things. He recently started reading Popular Mechanics. I must say, it seems to work for him. IMO, the magazine is better than it was about ten years ago. It seems to have lost some of its macho attitude, and seems to have added a bit more on how to do things. It's inspired him to do a few fabrication projects that turned out pretty well. I can't comment on the magazine as the last previous issue that I had read was perhaps 15, or more, years ago. As my memory was of a magazine perhaps 1/2 inch thick with all kinds of detailed how to build, articles and the issue I read told me how to nail triangular molding at the edge of a ceiling (something I'd know since I was a kid) I gave up in disgust. The "pee on the lawn"issue I read after a friend recommended it the other day and I've now book marked the site for occasionally reading. He seems to like the articles where they disassemble some mechanical item (like maybe a pressure washer) and explain what's inside. And the final pages now feature something a dad can make with his kid, which is a good thing. They've added some stuff that appeals to "foodie" tastes, as well. One of the problems is that I've been working around mechanical devices since I was about 12 years old and while a pressure washer might be a mystery to some I can pretty well guess what must be inside the thing by seeing what it does. Well, some of us here are A) pretty damned old, and B) very experienced with mechanical and/or electrical things. It's unlikely a mass market magazine is going to teach us much. Bicycling parallel: I've got a foolishly large collection of bicycling books. Back in the 1970s, there weren't as many on the market, but I bought every one I could find. Gradually I realized that I was learning less and less from each one, simply because there was less and less I didn't already know. It has reached the point that when I recklessly buy a bicycling magazine at an airport, to have something to read on the flight, I soon curse myself for forgetting just how awful they have become. I remember when bike magazines were full of such things as the proper way to adjust the seat angle and fore and aft position or the saddle height - so that sitting on the seat with the pedal down the heal should rest on the pedal with the leg straight. Or the handle bar position so that when in the drops the handle bars should obstruct your view of the front axle. In retrospect they weren't all perfect suggestions but they were close enough so you could ride long enough, in reasonable comfort, to decide for yourself how you wanted the bike set up. Now the magazines seem to recommend the XYZ fitting machine where, for only $100, you can have your bicycle fitted to your exact physical dimensions. -- Cheers, John B. |
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Preserving polished aluminum
On Sunday, July 30, 2017 at 7:30:29 PM UTC-7, John B. wrote:
But I do believe that the "modern" (would one say?) type of articles reflect the interests of the readers. How many people would leave the comfort of the air conditioned Television Room and the 60 inch TV to actually get their hands dirty building a midget racer.... or an arc welder? (Or even know what an arc welder is?) But the thought comes to mind, are Modern Americans actually intent on discovering whether one should "pee on the lawn", or not? Sufficiently so that a national magazine would publish an article concerning what dirty little boys used to do, with no lessons whatsoever? When I show up with a battered old frame and end up with a showpiece the Mexicans get it and the Americans ask, "Where did you ever find a bike in that condition?" |
#27
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Preserving polished aluminum
On Sunday, July 30, 2017 at 11:24:50 PM UTC-7, John B. wrote:
On Sun, 30 Jul 2017 18:32:36 -0700, Jeff Liebermann wrote: On Sun, 30 Jul 2017 17:52:34 -0700 (PDT), wrote: A KNOCKOUT https://media.defense.gov/2007/Oct/2...-1234S-008.JPG At about the end of the internal combustion "fighter" era I was stationed at a base that was training foreign air force, that we had given F-51's to, how to fly them. We also had a squadron of T-33'sw and there was much discussion about which was the better. The jets were much faster so one of the F-51 pilots challenged the T-33 guys for a test. Engine start to 10,000 ft. and rather surprisingly, to the T-33 guys, won the bet. I'll raise you 3 more engines: https://www.eaa.org/~/media/images/news/2015-briefing/2015-04-docrollout2-960px.jpg http://www.warbirdsnews.com/wp-content/uploads/Screen-Shot-2016-05-11-at-9.02.33-PM.jpg http://www.warbirdsnews.com/wp-content/uploads/Docs-Rollout-06.jpg https://www.youtube.com/watch?v=XU0f4VUDGR0 No turrets :-) "Doc" also flew at Oshkosh this week: https://www.youtube.com/watch?v=PgdEI3-GaAg (Mostly at beginning and again at end of video). If the tail number is authentic 44-6972 was in the 9th Bomb Group, at Tinian Island in 1945 and damaged by another aircraft that crashed on takeoff. The Russian MIG pilots in Korea discovered the same thing and had to work out a one high speed pass strategy rather than try a dog fight. |
#28
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Preserving polished aluminum
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#29
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Preserving polished aluminum
On Mon, 31 Jul 2017 07:22:28 -0700 (PDT), wrote:
On Sunday, July 30, 2017 at 11:24:50 PM UTC-7, John B. wrote: On Sun, 30 Jul 2017 18:32:36 -0700, Jeff Liebermann wrote: On Sun, 30 Jul 2017 17:52:34 -0700 (PDT), wrote: A KNOCKOUT https://media.defense.gov/2007/Oct/2...-1234S-008.JPG At about the end of the internal combustion "fighter" era I was stationed at a base that was training foreign air force, that we had given F-51's to, how to fly them. We also had a squadron of T-33'sw and there was much discussion about which was the better. The jets were much faster so one of the F-51 pilots challenged the T-33 guys for a test. Engine start to 10,000 ft. and rather surprisingly, to the T-33 guys, won the bet. I'll raise you 3 more engines: https://www.eaa.org/~/media/images/news/2015-briefing/2015-04-docrollout2-960px.jpg http://www.warbirdsnews.com/wp-content/uploads/Screen-Shot-2016-05-11-at-9.02.33-PM.jpg http://www.warbirdsnews.com/wp-content/uploads/Docs-Rollout-06.jpg https://www.youtube.com/watch?v=XU0f4VUDGR0 No turrets :-) "Doc" also flew at Oshkosh this week: https://www.youtube.com/watch?v=PgdEI3-GaAg (Mostly at beginning and again at end of video). If the tail number is authentic 44-6972 was in the 9th Bomb Group, at Tinian Island in 1945 and damaged by another aircraft that crashed on takeoff. The Russian MIG pilots in Korea discovered the same thing and had to work out a one high speed pass strategy rather than try a dog fight. I was in B-29 squadrons, first a bomb squadron and secondly a reconnaissance squadron. One of the RB-29's was shot down off a Russian held island just north of the northern most Japanese island. A couple of MIGS made a firing pass and hit the vertical fin and an outboard wing tank and the aircraft commander ordered the gunners not to fire back. I later made a rather disparaging comment about the "don't fire" order and a gunner, who I was speaking to, told me that the central fire con troll system in the B-29 was hard wired for a target speed so much slower then a passing MIG that if you hit it a miracle had just happened. -- Cheers, John B. |
#30
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Preserving polished aluminum
On Mon, 31 Jul 2017 09:42:36 +0700,
John B wrote: On Sun, 30 Jul 2017 10:14:15 -0500, AMuzi wrote: On 7/30/2017 4:00 AM, John B. wrote: I've got quite a few aluminum bits and pieces from older bikes that are pretty shoddy looking with nicks and dents and corrosion. I can clean them up with a "flap" wheel and then polish then with the usually buffing wheels and decreasing compound grits until they have a high polish but once back on a bicycle again they seem to corrode rather rapidly and in a few months end up looking sort of "splotched" and dull, which of course is exactly what bare aluminum does in contact with air. Classic French equipment in bare aluminum looks fantastic with Simichrome or any similar metal polish on a cotton cloth. Trouble is, as we both found, regular cleaning and polishing is required to maintain that finish. http://www.yellowjersey.org/photosfr...st/mikipv9.jpg Exactly :-) I think I will try what Frank suggested, a two part clear coat, as they now make all kind of magic paints and I know a couple of people who paint boats professionally that I can ask for suggestions. Let us know how it goes. I have a great Rodriguez tandem, that looks lovely when polished up with Simichrome. It doesn't dull that quickly on its own, but sweat and body contact take the shine away in a hurry. By the way, this bike is for sale! -- Ted Heise Bloomington, IN, USA |
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