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HelicopterMain Discussion › Anodizing a piece of aluminum: How hard is it?
09-06-2011 05:55 PM  5 years agoPost 21
RyanW

Key Veteran

Edmond, Oklahoma

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As others have said, it is best to get a local place to anodize it for you. DFW has a ton of those places!

To clear up the color issue, the biggest thing is to not have it chromed or polished. We found with our amplifiers that the chrome or polished aluminum amps retained a lot more heat than one that was natural finish or even painted.

-Ryan
Mikado USA, Kontronik, Opti-Power, MKS Servos

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09-06-2011 06:01 PM  5 years agoPost 22
Havoc

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Ky.

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Not all chemicals are the same. You need to know what it is you are demonizing before you demonize it. It's like the old stunt about asking people to sign a petition against dihydrogen monoxide. But that's why industry is getting pushed over to China because the "my body is my temple" types won't tolerate any substance they can't find in their navel no matter how inert.

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09-06-2011 07:39 PM  5 years agoPost 23
MartyH

rrProfessor

USA

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Havic, I have worked in industrial chemicals my entire adult life. I am 48. I'm not a tree hugging know nothing. Anodizing chemicals are not inert. Some can be made that way, some are left with metals in them. If I'm demonizing anything it's the people who mishandle chemicals on a day to day basis. We keep losing the availability of the good stuff because people can't be counted on to act responsibly.
Anyway, I got myself up to speed today on the process and chemicals used for aluminum anodizing and I'd say it's not worth to DIY. I'd find a local shop and have them do it. I can tell you from experience if you have a number of things you want to match in a certain color, have them all done at the same time because the color will shift widely between runs.

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09-06-2011 08:10 PM  5 years agoPost 24
Havoc

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Ky.

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Anyway, I got myself up to speed today on the process and chemicals used for aluminum anodizing and I'd say it's not worth to DIY.
Not attacking you. Nobody is advocating the mishandling of chemicals. Glad you got up to speed today. The worth is probably relative.

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09-06-2011 10:59 PM  5 years agoPost 25
jgunpilot

Key Veteran

Pollock, LA

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The McPoyle family from "It's Always Sunny in Philadelphia" use anodizing chemicals every day and it never hurt them.

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09-06-2011 11:07 PM  5 years agoPost 26
Pistol_Pete

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Seffner, FL

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^parts per million...the devil is in the details.

All this for an ESC heat sink?

Just slap it on as is and take temps to compare to old ones. If you still get thermal shut down, move ESC and try again.

~~Enjoying the hobby one flight at a time~~

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09-06-2011 11:48 PM  5 years agoPost 27
Justin Stuart (passed)

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Plano, Texas

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All this for an ESC heat sink?
It's about learning something new.

I don't see much wrong with pouring neutralized hydrochloric acid down the drain, but I do have a problem pouring something like potassium dichromate down the drain.
We keep losing the availability of the good stuff because people can't be counted on to act responsibly.
I think we loose access to the good chemicals because people hurt themselves with them.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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09-07-2011 12:58 AM  5 years agoPost 28
Pistol_Pete

rrProfessor

Seffner, FL

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It's about learning something new.
Im with you 100% on that one. The only downside is not knowing when to quit.

~~Enjoying the hobby one flight at a time~~

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09-09-2011 05:39 AM  5 years agoPost 29
Machinehead01

Veteran

Lower Michigan

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As far as the acid

Check with your local pool supplier. Oft times they will take any left over hydrochloric acid.
Black anything will NOT help you dissipate heat, period.Most metal coatings can keep heat in, unless it's a sulfate. Natural aluminum has the best dissipation rate but also oxidizes faster.

Tom

"You judge according to the flesh; I am not judging anyone."

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09-09-2011 05:52 AM  5 years agoPost 30
Havoc

Elite Veteran

Ky.

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Why are you using HCl?

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09-09-2011 07:29 AM  5 years agoPost 31
Justin Stuart (passed)

rrMaster

Plano, Texas

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I chose HCl to comment on as an arbitrary example of a chemical that I would not feel bad about dumping down the drain (so long as I had neutralized it with baking soda or ammonia hydroxide or something similar) as opposed to Selenium Dioxide or Chromium Trioxide which are much more toxic and I could not morally dump down the drain.

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Scorpion Power Systems
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09-09-2011 01:24 PM  5 years agoPost 32
Havoc

Elite Veteran

Ky.

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Oh ok, I thought you guys were trying some "infinite monkeys theorem" approach to anodizing aluminum. But you are just talking about what chemicals you can pour down a drain. I'm getting the hell out of this thread now.

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12-06-2011 06:35 AM  5 years agoPost 33
carbonrex700

Senior Heliman

boardman OH

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good info here

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HelicopterMain Discussion › Anodizing a piece of aluminum: How hard is it?
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