Better Hold Down for Printinz on Simple Metal

I cut two strips of aluminum (2" x 1/2" x 1/8" thick) and drilled a 1/8" diameter hole in the center. I then removed the existing center hex's from the Simple Metal, replaced them with longer ones (left over from the kit), and used this method to hold down the printinz. After I make a print, I simply loosen with an allen wrench and slide the plate out.