I struggled with what to do with the 42” x 30” drawings while building ship models.  The sheets were too big to have laying around and I didn’t have the wall space in my work room to hang them up.  My solution, which may be of interest to other modelers, was to design this drawing rack out of ¾” PVC pipe.  The upper frame is at work bench height for the active drawing sheet.  The lower frame is storage for drawing sheets not in use.  It is a simple matter to move the sheets out of the storage fr