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Here are some tips for selecting construction grade lumber

Most lumber yards will let you do a little sorting to get some better quality boards.

Don't try this when the yard is real busy, because the yard hands can't waste their time with you if a lot of other customers are waiting. Often they will be happy to go serve another customer and come back to you to check te board count. And make sure you don't mess up their lumber piles in the process.

Here is a video to show you what to look for.

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