The material used needs to be denser, ie MDF, to hold the fasteners better.  In this case, I should have ordered from IKEA.  At least with IKEA, you know that the pieces are properly drilled and once together, you won't get it apart in the pieces originally put together.  It stays where it is put.  Holes were drilled in the wrong places, there was no tightening noticed when the cam and cam lock,  edges fit at one end,not the other.
Unfortunately this is a garbage in and garbage out!  Who knows, I might have rec'd the parts drilled on the day before holidays or the first day back!
without all of the tools in a shop or at home req'd to fix the holes, or add new holes, this is not a good buy.
fg