Desk components are accurately drilled/tapped for assembly. Problems occured when a couple of cam lock bolts when they are screwed  into the threaded plastic inserts, came out of the board with any slight twisting of the parts being connected. Not a big problem, a little carpenters glue made the joint/connection stronger than before. Another problem I had was that I shattered one of the cam "nuts", but I probably caused that by over tightening it. Wish there were extra cam nut(s). The finished desk look great and seems to be very sturdy.