Advanced Bed level

Made this bed level print so it can better show the bed level and where on the bed it's sticking or not. The model is 200mm x 200mm x 1mm so scale as need for layer height (if printing at 0.28 layer height, scale z height by 2.8). To test the bed level, I have been raising the initial (only) layer height speed to 100 mm/s and setting the bed 10 degrees lower than what the first layer is normally printed at. Must have layer width set to >= 0.4mm.

Also ideal to print when changing the filament because it uses enough to purge the last colour.

The only difference between the normal and no-string model is that the normal one has a small line that connects to the line most slicers lay down (from [10, 20] to [10, 200]) so both can be removed at the same time.