I've done stuff with pallets.
Even worse than other types of re-used wood. I got a pretty large quantity of pallet boards, for next to nothing, definitely loads cheaper than the cost of something more sensible to achieve the same task.
So I didn't even have to disassemble the pallets but still had to get loads of large annular ring nails out, many of them rusty or missing heads. Despite pallets themselves being an
impressively standardised thing it turns out that the boards themselves can be any number of thicknesses or widths.
And only about 10% of them are anything approaching straight or flat.
And you basically have no idea what they've been treated with or had spilt on them over time.
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