Bed Perimeter Rectangle For Leveling and Calibrating your printer

Use this rectangle to calibrate your 3d printer.

Stretch or shrink the rectangle in the x and y axis until it just fits onto the build plate, then turn the number of shells up as high as it will go.

Start to print it and watch the bead of plastic as it prints around the perimeter. Wherever the plastic looks "more squished" means the plate and extruder are closer, wherever the plastic looks "less squished" mean's the build plate and extruder are farther apart.

You can keep adjusting the leveling screws as it prints until it looks perfectly even all around.

This is way more accurate than the piece of paper method.

You can also make any other adjustments you need by looking at how thick or thin the bead is, whether they're to far apart or too close, etc.

Great to fine-tune your printer before starting a print.

As soon as you're done leveling and tuning, just stop the print, peel it off and you're good to go.