The Ikea Lack table is a good and low-priced choise, unfortunately it is not stable enough for modern 3D printers (like Bambulab P1 and X1 series). It needs to be stronger!!!!!!!
I designed this support to make it much more resistant.
It can be positioned between leg and plan and screwed to both (eventually glued to leg).
You can use the original screws or (as I did) you can drill the top and replace with passing screws (I used 6mm x 110mm).
If you drill the top, use the washers provided in the second stl.
Please leave comments if it is useful for your setup.
Bye