Anodising and dimensions
Turbo Mini Forums

Did a search but it doesnt seem to be covered.

Does anodising alter the size of an aluminium object at all, even by the minutest amount?

I seriously doubt it!

It does add some thickness to the material. Usually 50% of the thickness of the anodising the other 50% penetrates into the material, its only microns though!

What are you looking at having anodised? Gearbox maybe? :)

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1/4mile in 13.2sec @ 111 terminal on 15psi

Brake callipers. Im concerned about the bore size

I seriously doubt it!

Carl is the man to answer this, I'm sure it is very little though and the pistons are probably enough clear of the caliper bores to get away with it. If not a v light hone afterwards will sort it.

Typical anodising thicknesses range from 5 to 50 microns depending on application. That is per side and about half of the thickness goes into the material. A bore coated with a 25 microns of anodising will have a 25 micron reduction in diameter

according to my anidisers industry standard would fall between 8-11 microns where fitted tollerances are critical, any thicker and the surface grows unevenly and with it such a problem paul is trying to avoid
but as above ,if needed extra protection they simply leave it in the bath for longer.


carl

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

Cheers Carl

I seriously doubt it!

There is a 1000 microns in a mm in case any one was wondering