Hanging Shelf for IKEA

You will also need 2 pcs M4x35 screwa/bolts and a Threaded rod M6 cut to 280mm. If you don't have a 3D printer that can handle 240mm in height or want a slightly longer/shorter shelf (rack) and have a printer that can handle it just resize in height when slicing. Whatever lenght you do it, Shelflenght+40mm= Threaded rod lenght.