D
DEWAUDIO
Guest
Today I experimented a little bit with anodising aluminum.
Actually very easy but be WARNED! A BIT DANGEROUS aswell.
Carefully add acid to distilled water! REMEMBER - ALWAYS ADD ACID TO WATER - not the other way round.
Make an electrical connection to part to be anodised using an aluminum clamp of some kind - very important that it is also aluminum.
Connect lead sacrificial metal to negative terminal of PSU.
Connect part terminal to positive of PSU.
Immerse the two eletrodes in acid solution - be careful
Turn on PSU and let current flow for 45 minutes. Lead sacrificial metal will fizz.
Remove alu part after 45 minutes and rinse using cold water.
Optional: Dip in undiluted food colouring and let sit for 5 minutes. The colouring is absorbed into the pores of the oxide layer.
To seal surface: Boil in water for 30 minutes - rapid boiling works best. This seals the oxide surface to finalise the anolidising.
BE VERY CAREFUL WITH THE ACID! WORK IN A WELL VENTILATED AREA - PREF OUTSIDE.
D
Disclaimer: I will take no responsibility for your stupid actions if an acident happens!
Actually very easy but be WARNED! A BIT DANGEROUS aswell.
Battery acid diluted 30% to distilled water - 70%
12 VDC supply - high current
Pyrex glass container or a ceramic container - capable of withstanding some heat and acid.
Aluminum clamps or supports for aluminum objects to be anodised.
Lead sacrificial metal - big old fishing sinkers works fine.
Carefully add acid to distilled water! REMEMBER - ALWAYS ADD ACID TO WATER - not the other way round.
Make an electrical connection to part to be anodised using an aluminum clamp of some kind - very important that it is also aluminum.
Connect lead sacrificial metal to negative terminal of PSU.
Connect part terminal to positive of PSU.
Immerse the two eletrodes in acid solution - be careful
Turn on PSU and let current flow for 45 minutes. Lead sacrificial metal will fizz.
Remove alu part after 45 minutes and rinse using cold water.
Optional: Dip in undiluted food colouring and let sit for 5 minutes. The colouring is absorbed into the pores of the oxide layer.
To seal surface: Boil in water for 30 minutes - rapid boiling works best. This seals the oxide surface to finalise the anolidising.
BE VERY CAREFUL WITH THE ACID! WORK IN A WELL VENTILATED AREA - PREF OUTSIDE.
D
Disclaimer: I will take no responsibility for your stupid actions if an acident happens!
