Product designer and sculptor Konstantin Achkov worked for three years closely examining the idea of puzzle-like assembled furniture. His Stack and Frame collection of furniture were exhibited during Sofia Design Week 2012.

Made from 18mm beech plywood using a CNC router, the pieces are assembled without glue or tools. Just piece them together like a big puzzle! Although at first glance it looks like it might be confusing, I bet it’s actually very easy, probably much less stressful and anger-inducing than putting together a piece from your favorite local Swedish store.