My son-in-law put this together for me, as it was too big a project for me, plus he has one very similar to mine that he assembled previously.  Although the screws on the safety bar keep loosening up.  I didn't tighten them too tight to strip them, but I have to keep tightening them, and a couple don't want to tighten.  It seems the screws are too small for the hole size or just not strong enough to do the job.  I had to put super glue in the holes to keep the bar from rattling and coming apart.  You need a different type of screw in those bars to make them more solid.  Not a very good advertisement.  But the beds are very nice and the grandkids love them.