We may receive a commission on purchases made from links. Buildings with hidden spaces have long been a subject of public interest, with plenty of real-world history from ancient Egyptian tombs ...

Behind the scenes, a heavy duty linear actuator pushes or pulls the door as necessary, onto which [Krizbleen] expertly mounted the bookcase with some 2″ caster wheels. The actuator expects +24V ...

Like a similar secret room bookcase door from HGTV's Jasmine Ross, Elizabeth's "IKEA BILLY bookcase remix" is a bit more than ...