I laid out some Billy Bookshelves in AutoCAD (to get the custom corner angles), then classed them up with an MDF top, and am going to trim them in with moulding. [album] :
Ikea Billy Bookcase Hack: Built-in — Mid Modern Mama
Old Billy Corner unit mid-2000s instructions? : r/IKEA
BILLY Bookcase combination/crnr solution, white, 95/95x28x202 cm - IKEA
25 Ultra Clever IKEA Billy Bookcase Hacks
90 degree corner installation of IKEA BILLY with Doors - IKEA Hackers
BILLY white, Bookcase, 215/135x28x237 cm - IKEA
Billy Bookcase Built-In with Corner Unit DIY: Our Library Reveal – turquoise toffee
BILLY Bookcase combination/crnr solution, white, 95/95x28x202 cm - IKEA
25 Ultra Clever IKEA Billy Bookcase Hacks
An IKEA Billy bookcase hack inspired this cute media wall DIY | Real Homes
BILLY galvanised, Corner fittings - IKEA
Billy Bookcase Built-In with Corner Unit DIY: Our Library Reveal – turquoise toffee
One Room Challenge: The Ultimate IKEA Billy Bookcase Hack Reveal! - ourhomebecoming.com
90 degree corner installation of IKEA BILLY with Doors - IKEA Hackers