Ok, I've managed to work on vintage bikes for several years without using Oxalic Acid. I've finally decided to take the collective advice here and start using it. But I have some questions.
1. The bottle I bought says it's concentrated and I should cut it by a factor of 4. Do you use it straight or cut?
2. How long is safe to leave chrome parts and/or non-chrome parts in the bath?
3. What happens if you put rubber in the acid bath? I have a chrome MTB seat post clamp that needs a bath bad, but it has a rubber tip that can not be removed. I don't want to ruin the rubber tip.
Thanks for any help.