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First-Time Oak Barrel Soaking

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Mohammad Farzane — Isfahan, Iran asks,
Q

I’ve made a wooden barrel from American oak. After filling it with water for the first time I noticed the water was very pale brown. After about 4–5 hours the water was nearly black. Is this normal? Could it be due to iron filings in the barrel? I used a grinder to prepare the chime and I think some iron fillings got into the barrel.

A
Your pictures of the barrel you made are very impressive and I applaud both your ambition and skill! The artistry it takes to cut, shape, curve, and toast wood so it will hold liquid is not easy to acquire. Bravo to you. To answer your question, it’s possible that some iron filings (from grinding the chime, or the part around which the head fits) are being rinsed out. However, I suspect that it’s coming from a much simpler and harmless source, the wood itself. In your pictures (below) it looks like you toasted the staves and/or the inside of the barrel itself while assembled. If this is so, it’s only natural that residual charred dust from the staves would come out in the water. Similarly, since wood is porous, it makes sense that over time any water inside the barrel would become darker. Think about making a cup of tea with a tea bag. Dip the bag into the water for five seconds and the water might turn a light barely-brown. Leave the tea bag to steep in the water
Response by Alison Crowe.