About this 3D model
Remixed the “Kallax Hider” to include hinges that can be attached to the inside using double-sided tape. Thanks to @Celta and @Nui ! The file “Kallax-Hinged-Door-Complete” is just to have a fancy 3D preview. Reversible Hinges are glued on, as I found no good way to add them in a workable state directly on the parts. And as Kallax is only cardboard from the inside, screwing in them isnt really desirable anyway. Somewhat WiP, have not improved further than initial testing as shown in the picture