I currently have a 2.2m desk made from a double layer of 18mm birch plywood - So 36mm in total - That is currently supported by 4 hairpin legs (700mm tall), one on each corner and a set of drawers (700mm tall) for support in the middle.
My plan is to mount this desk on the wall with battens.
I have done a test fit and it seems that my main fear is becoming a reality, and the table is sagging somewhat on the one side not supported by a batten.
How can I go about making an addition to strengthen the unsupported side such that it doesn't sag/bow?
My initial idea was a metal support - C channel or box section
Photos (Click to enlarge)
Note: Spirit level is 1.8m long
Mounted front of desk (away from wall)
Mounted Back of desk (At wall)
Before mounting - note: middle is being supported by drawers