http://weightweenies.starbike.com/forum/viewtopic.php?f=3&t=68194
ephedyn a écrit:Firstly, I'm not paid by F&N Coca Cola. In fact, I don't drink coke. Secondly, if you were misled by this topic, this is actually a tutorial on DIY anodizing for $6. The full story is at my website (http://www.ephedyn.com), but I decided to put a summary here anyway.
I was changing the bolts on my AX seatpost to aluminium, so I decided to experiment with the original bolts, since I knew they were made of titanium. I only used 6 items to set up the anodizing apparatus:
(left to right) Takeaway fishball noodle soup, alligator clips, wire
(left to right) Power supply (can use batteries instead), aluminium foil, regular coke
You need to minimize contact between the clip and the bolt, so this was how I did it.
Here you can see the setup, more or less. The +ve wire goes to the bolt, and the -ve wire goes to the aluminium foil. I did it wrongly in this picture so the coke just fizzled around the bolt without anything happening. But if set up correctly, the bolt changes to a nice color after about 1 minute dipped inside the coke. The bolt and the foil mustn't touch, but aluminium foil floats very easily, so it's best to make a small square section of the foil and tape it to the side of the container. I applied 24V which gives it a blue coloration. Other possible colors (that's why there's no anodized black titanium):
Compare the anodized bolt with an original:
Higher resolution: http://4.bp.blogspot.com/_j0vYt68oRrA/S1gvGyFK61I/AAAAAAAAAgk/vb7A9b3n1dk/s1600-h/P1040700.JPG
Oh, and it's the same if you use coke light... no difference here for weightweenies. The reason why this works is because of the high phosphoric acid content in coke. The difference between diet versions of coke and regular coke is that they use a protein sweetener, or less sugar, instead. So, enjoy your fishball noodles and coke :beerchug: as you anodize your parts!
