Random thought… I wonder if a bit of Cermark or Laserbond in the back left corner of the Aura’s metal tray would let you mark the 0,0 corner permanently?
Well there is one way to find out.
I just used blue tape. The Aura “bed” is just thin stamped metal and heat discolors from heavy use on its own.
I’ve never had the need to pay the big bucks for CerMark.