Ultimaker Original Z-Stage Brace

This thing replaces part "E" ("wooden panel with adjustable level screws") of the Z-Stage in the original Ultimaker.

Several years ago I installed a heated bed that consisted of a heavy hunk of aluminum, which not surprisingly is stiffer than the flimsy birch panel that was supporting it, so over time the panel warped. This is my replacement because I'm too cheap to spring for the Ultimaker+ upgraded z-stage, which is very nice I'll admit.