Utility Shelf Guard Rail System

I recently installed shelving in my workshop to hold some larger 3d printing accessories and supplies. The problem I have is that vibrations/shock from a nearby door opening/closing (heavy garage entryway door with an autocloser that people let slam) causes items to shift and eventually fall off. Since I am planning to store my 3d printing chemicals (acetone, thf, mek, isopropyl) on the shelf, I really don't want things falling off! To solve this, I installed a guard rail on the shelf that keeps things from falling off. I custom designed a set of mounting brackets that hold a metal rod/tube. There are 3 types of bracket - end (seen in the back 2 corners of my picture), corner (seen in the front 2 corners of my picture), and passthrough (seen in the front center). The brackets are broken into 2 pieces that have a connector to tie them together and the base pieces are identical for all types of bracket. Required Parts: #8 Wood Screws: #8 x 1" (for ¾" thick shelves) #8 x 1-¼" (for 1" or t