Thanks for validating and expanding on my post with more detail. I personally wouldn't try using glue on flat-pack furniture, though. For one, the pieces are g

Thanks for validating and expanding on my post with more detail. I personally wouldn't try using glue on flat-pack furniture, though. For one, the pieces are generally finished there they connect, which means you are gluing to a lacquer on at least one side (possibly both!), and wood glue really wants a porous surface like unfinished wood. Another reason is that much flat-pack furniture (less so Ikea) is super cheap particle board that simply isn't strong enough to support the much weight from its surface like you would force it to with glue. When used properly, however, wood glue is indeed shockingly strong.