Customise your Case with Annodising

Preparation of annodising bath

Aluminium sheeting added as cathodes

Step 2: Keep the acid solution under 2/3rds capacity
The bolt holes should be kept as high as possible to avoid acid seeping out of them, and the volume of the solution should should be no more than 2/3rds of the containers capacity. The reason for using two cathodes is to ensure that th anodising process occurs more evenly over the surface of the work-piece... a lead lined tank would be perfect, as long as there was no "metal-to-metal" contact resulting in short circuits.

Acid solution at 2/3rd's capacity

Step 3: Dilute acid slowly to avoid boiling
The most easily procured form of Sulphuric acid is from a battery wholesaler, and will be 35% strength (WW) with a specific gravity (SG) of 1.28. This is overkill, as 10% WW/ 1.2SG is enough to get a good oxide layer, however I have spoken to people using the stronger concentration with good results. If using acid worries you, you can dilute to a ratio of 2:1 water/acid, but add the acid to the water slowly so the resultant thermal reaction doesn't cause the solution to "boil" over.
«Prev 1 2 3 4 5 6 7 Next»

Most Recent Comments

15-04-2006, 09:29:35

Kempez
Its a great guide Peevs :)

I'm getting well tempted for a new case but lack of room restricts me at the moment. Once I get some more room then I'll buy a new case and get some annodising done :)

19-04-2006, 11:56:35

FragTek
You're last pic in the first post is of an acid washed Angel, I used to have one just like that with a black and orange wash on it...

Cheers! :D

24-10-2009, 15:39:13

mnpctech
sorry for reviving this old thread, but it's worthy of revisiting :)

24-10-2009, 15:55:51

Coopsman1
That is awesome but acid id something i dont want to play with, local companys tend to do it fairly cheap now adays

24-10-2009, 20:05:56

Drach
Great guide. Had been curious about doing this on a few parts since recently seeing it in a case mod I really liked! :)

25-10-2009, 04:16:55

Socks
isnt there an engineering company that sell a kit for anodising?

25-10-2009, 07:51:59

Marcus
Caswell :)

25-10-2009, 08:20:04

Socks
marcus to the rescue, yet again!! wooop!

25-10-2009, 10:37:49

Coopsman1

Caswell :)



Thanks Marcus!!!

I'm looking into it now

25-10-2009, 12:22:13

Marcus
Here's some more info if you want to have a crack at it at home, it's from an e-mail I got from them a while back RE sourcing suplhuric acid.

Due to health & safety retail outlets cannot supply sulphuric acid in its neat form but can sell a formula for drain cleaning. We have found over the last 5 years that a product called "Oneshot" sold in B&Q, Robert Dyas and other good ironmonger stores is the best formula for our use. It is 91% sulphuric acid and as the colourant and odouriser are both organic, these disappear quickly with use.

To use this product you need measure out 2 litres of deionised water into a plastic container capable of holding 4 or 5 litres and also able to stand reasonable temperature. You would then the 1 litre of Oneshot into the water, NOT the other way round, but do this slowly as it will generate a fair amount of heat. You now have what is termed battery acid. For anodising one part of this acid is poured into two parts of distilled water and you now have an anodising electrolyte.

Reply
x

Register for the OC3D Newsletter

Subscribing to the OC3D newsletter will keep you up-to-date on the latest technology reviews, competitions and goings-on at Overclock3D. We won't share your email address with ANYONE, and we will only email you with updates on site news, reviews, and competitions and you can unsubscribe easily at any time.

Simply enter your name and email address into the box below and be sure to click on the links in the confirmation emails that will arrive in your e-mail shortly after to complete the registration.

If you run into any problems, just drop us a message on the forums.