This was a complete clear acrylic display enclosure for a local upscale deli/restaurant in El Dorado Hills.
The top and customer side are protected and the server side is completely open.
We machined acrylic angle blocks with threaded holes for attaching the sections together. The only non-acrylic hardware were the stainless steel screws connecting the blocks to the acrylic.
This way, there is nothing obscuring the customers view of the delicasies.