7x7 Bed level grid pattern

A squares grid pattern to use with bed leveling with 7x7 points. This grid should fit 220x220 beds with enough space left on bed in blind spots: areas where 3D Touch sensor cannot reach due to probe offset.

Initially, this model was created for Ender3 V3 SE using navaismo fork.

Either place the model in the center of the bed to check averaged bed grid points, or place it 1mm from the front and 1mm from the left side, leaving empty margin on right and rear side that CRTouch couldn't reach.

UPDATE 2025-04-14: Added connection lines between squares to ease removing the test print from the bed. Added version with rounded corners squares to ease the stress on corners to reduce risk of delamination