The idea is you don't have to buy Ik*a furniture anymore since they are never exactly what you need when it comes to sizing.
Instead, you design your own furniture, you cut the boards and using these jigs you are able to join boards together like a big boy/girl.
You need to print twice both A-Part and B-part, once normally and once mirrored (for left and right each)
There is also a mechanical stop to be printed (just once).
As for now, the thickness of the boards should be 18mm (or more (untested so far)