10/18/2026
It went together dry. Add glue, and it stops halfway.
Water-based wood glue swells the wood slightly, so a joint that's tight when dry gets tighter once it's wet. A tight joint also traps air as it goes in and can scrape the glue off, leaving the joint short of glue. That's why a tight dry fit can be the one that seizes.
The test is by hand. Dry fit the joint. If it needs pounding to go together, it's too tight. Ease it with a light pass on both faces (a sanding block is enough), trying it after each one, until it goes in with a push or a light tap, then glue. Don't overshoot: if it drops in with no resistance, it's too loose, because white and yellow glue only bridge about a paper-thin gap.
Save this before your next glue-up.
β The Sage