Finally built myself a nice 3D printer enclosure from IKEA cabinets.
Basic idea is to take a shallow (20cm) and a deep (40cm) cabinet frames and to stagger the bottom/top panels and wall panels, making a nice single-piece 60cm cube. A bit more info with a short how-to and a few ideas and nuances.
I rocked the Lack setup for years with my Mk3s. I finally had to give it up since I needed to reconfigure my setup and the Lack no longer worked for it. I do sort of miss it though.