If you need 4x4s or other large posts, inspect them first — a few extra minutes at the lumber rack can save you months of dealing with warped, twisted posts in your deck or project.

It’s every DIYer’s worst nightmare: you put time and money into building that dream deck only to find that something’s wrong months later. The posts you used are starting to warp. That’s not an easy fix.

Fortunately, you can prevent warped 4x4s with a little extra time when you’re buying the lumber. Here’s how to make sure you’re getting the best 4x4s for your projects.

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