Anodized parts?

[tinytomlogan]

Is happy the battery was 'crash proof'

 

[Luigi]

Any news marcus? Working?

 

[Marcus]

Hard days sunbathing today, no battery attacking for me this afternoon.

Still got to find somewhere to dispose of this tub of sulphuric acid.

I've diluted /neutralised it with water & bicarb, can I wizz it down the drain now or is that still massively illegal?

 

[Diablo]

You ought to be OK, it'd be like doing it with HCl + NaOH --> NaCl + water, cept you'll end up with Na2SO4, CO2 and water. Na2SO4 will be soluble, hence it hould all happily go down the drain. Its not probably the best stuff in the world, but there's nothing too bad in there.

 

[Luigi]

Marcus, what are you annodizing? I'm trying to arrange getting my feser fittings done by someone I know, but as they are nickel plated brass it doesnt look likely

 

[Marcus]

@ Luigi

Nothing specific really, the setup won't be big enough for cases / panels so just odd & sods I guess.

It's something i've fancied doing for a while so whilst I have the room to give it a crack I may as well have a go.

 

[Marcus]

Just a FYI for anyone else considering doing something similar, this is the response I got from Caswell with regards to purchasing sulphuric.

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.

 

[Ging3r]

Just a FYI for anyone else considering doing something similar, this is the response I got from Caswell with regards to purchasing sulphuric.

Just cleans the drains then

 

[PV5150]

@ Matt

In other guides i've seen people use aluminum wire and aluminum foil to create the cathode, any real difference in doing that and using lead bar?

Also for the dyes, did you ever try textile dyes?

Yeah, you don't want both anode and cathode made of aluminium, the different metals isn't as important but the reistsance will build up as you oxidise the outside of the alu...that will slow it all down a bit.

You need something that won't eat the aluminium such as copper (well too much anyway). Lead is often used cos its not going to eat the aluminium, won't dissolve and won't rust.

Sorry I didn't get back to answer this earlier Marcus but yes the the answer that Diablo gave is correct due to the resistance build-up. I haven't ever tried textile dyes either...

 

[DeMoB]

How'd you get on with this Marcus?

Dan