That means the difference between buying and building the bottle silencer (~10$) and using an oil filter as such (~50$?) gets you out 10db. What if you fill up the bottle with oil? Or maybe with foam?
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That means the difference between buying and building the bottle silencer (~10$) and using an oil filter as such (~50$?) gets you out 10db. What if you fill up the bottle with oil? Or maybe with foam?