I need that link back too. Need to find Williams cat picture for the other thread 
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@B16bri no need for oxalic on the painted wood but dont use a very strong SH mix on it.
As far as the other woods just dont use more than a 2% sh. Most wood doesn’t need more than 1% sh then follow with enough pressure to take off any film and rinse really well.
The popular wood cleaning technique you are referring to is hitting it with sodium percarbonate then rinse then oxalic and rinsing again.
Epee can be pretty though stuff and you may need to use lye on it sometimes. It all depends on what you are cleaning.
If you have a job coming post some pics and provide as much info as you can. Some people here will help you out.
