BEST bed level test and live level

My old best bed leveling is still better than any test I've found to live level and test bed leveling. But after 2 years and many printers later, I've designed a better one.

The way this works is you level with paper like normal, then print this.

1) while it's printing, slightly run your fingers over the filament on the bed (don't burn yourself).

2) If the filamat stays place everywhere, congratulations, your bed is perfectly level. Stop the test, or allow it to continue, it only uses 1 gram of filament and finishes in about 4 minutes

3) If the filament lifts off or moves, let the printer keep printing, but quickly turn the dial on the corner that lifted off and allow the printer to continue printing.

4) Next pass around, run your fingers over that new filament. Go back to 1) and repeat until you reach 2)

ADVANTAGES:
--you only need to print this once to level your bed. Old version you had to stop and start the print repeatedly
--190x190 so it prints on