After applying an iron acetate solution
This wood has lots of character. ‎- Ken Morley
Is the Iron acetate to stain or does it have another function? ‎- Spidra Webster
Only for colour. It reacts with the tannins in the wood, and gives a more varied and interesting finish than straight staining would. The reaction is always more dramatic on older wood for some reason. ‎- Ken Morley