Thanks for this, just what I was after.
One question, does anyone have any suggestions for print settings (I'm thinking probably retraction-related but open to other pointers!) for printing this in PETG? It works great as it is except for the vertical grid/mesh part which ends up with an almost comical amount of stringing, blobbing etc.
I'm running an i3 Mega, current settings are extruder temp 235C, retraction 7.5mm @ 70mm/s, print speed 40mm/s, fan speed 30%,
Any help much appreciated!