Hard anodizing
Turbo Mini Forums

Can anyone help with a description on what the difference is between hard anodizing and normal anodizing??

IIRC hard anodising is the same except they use a higher voltage to get a thicker coating, up to about 50v for normal annodising and auto a couple of hiundred volts for hard annodising,

So it's just a case of a coating? so the only reason for hard anodising is to make it harder to scratch?? is that right?

thats my understanding yes,

also IIRC normal anodising is upto about half a thou thick max and hard anodising can be up to nearly 5 thou.

Other random things i know about annodising are...

the coating is an oxide layer created by a high voltage and sulphuric acid,

the colours are just a dye,

to get that brushed finish the metal is put in an acid bath.

some other materials (like titanium) can be annodised.

There's probably a wiki page that will give more info.

joe, is it you with the diy anodising setup? seem to remember someone has built one a while back, me and my dad want to dabble in doing some stuff

Yes i moved to the darkside

Instagram @jdm_brett

nope not me,

I think jimster had a set up.

http://astro.neutral.org/anodise5.shtml

Hard anodise is fucking HARD!! you know its hard when you are using a HSS drill bit and you get sparks!!!

Hard anodising uses a higher current and an acid temperature of zero degrees C The natural colour of hard anodise varies with the material quality. As a general rule, hard anodise is a dull gun metal grey colour, it is not so easy to dye.

Edited by Sprocket on 14th Jan, 2011.

Cheers guys that helps alot