I am building again. The second wing is on the board.
I got the desk moved in. Checked level on it. and the back end was dead on. The front was bowed about 3/32. It makes sense. The back is just a really big I beam, and the front is not. So after about 30 years with computers sitting on and full drawers it settled. So I put a sheet of 3/4" MDF on top to protect the desk and so I could shim it to true. One spot is off by the thickness of two sheets of paper. That is pretty darn close. Then on top of that sits my balsa building board and on top of that my steel magnetic building board. It is all pretty close. I will routinely check it. Well heck this darn apartment is constantly shifting. I have to add a 1/2" foam shim to the patio door again. It has shifted that much in less than a year.
I am going to put a shelf system in back of the desk to give me some storage room.
But for now it is building time.
Ken