Went to see the science crew at the school I work at to strip a chain ring - they looked at what was in oven pride, went in the back came out with some powder, mixed a bit and I shit you not, the anno was gone in about two minutes.
no black stuff either because the process was so fast - they are ordering me a jar (about £6, should last years as he only used a little) I will post details when I get it, he did tell me the name but I was that shocked with the time it took it went in one ear and out the other..
I fact I will see him on Monday and get him to write it down, so I can let you know - but it was fantastic stuff! and no I did not snort any!
