Quad Frame Parts

 I found these parts at Lowes today.  They would make a frame really easy for about $15!  Minus the bolts, and bolts can get expensive.  Just an idea. I'm now getting the urge to maybe build a Ycopter (Tri-copter).  But this time I want to build the frame from readily available parts from local hardware stores.  Because that is what most of us have for an option.  I found these 4" and 2" plates at Lowes in the hardware section in one drawers labeled "hobby something...."  I don't remember what is was exactly.  The aluminum channel shown in the top picture is the same channel I used on my Quad frame.  Any size will do, doesn't really matter what you use.  Some people use square towel rack, but I think those chrome things are cheesy.