Back Rivet Plate

Here's my inset back rivet plate. It's 3/4 inch thick plate steel and 9"x15". It's flush with the top of my workbench surface and I leave it in place all the time. I beefed up the frame and added screws to level it. I got it smooth by starting with a belt sander with 80 grit and working my way up to about 320 grit on a palm sander. I protect it with Boeshield. I've had it in my workbench since I began building but I never had a picture of it to show others.