Bed Center Calibration Tutorial (using parametric crosshairs with rectangle)

# <strong>Check latest, maintained version [here](https://www.printables.com/model/832144-bed-center-calibration-tutorial-using-parametric-c)!</strong>
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## <strong>Parametric design (OpenSCAD, so usable through the [Customizer](https://www.thingiverse.com/apps/customizer/run?thing_id=2280529)) added!</strong>

This calibration tutorial is also described [here](https://3dprinting.stackexchange.com/questions/6375/how-to-center-my-prints-on-the-build-platform-re-calibrate-homing-offset)!<br><br></strong> The tutorial is <strong>updated March 17, 2024</strong> with a new <strong>parametric OpenSCAD model</strong> which can be used (e.g. using the <a href="https://www.thingiverse.com/apps/customizer/run?thing_id=2280529">Customizer</a> app) to fit your own heat bed/build plate (now also <strong>supporting the non-square build plates</strong>). The parameters of the model are self explanatory; define the build plate size through bed width and depth or use a rectangle ratio and the width.

The old STL files have been removed and some examples introduced as the old ones did not slice perfectly in Cura (they did go well in Slic3r though...). <strong>Please make your own center calibration STL</strong> by tuning it exactly to your printer setup.

<strong>What! Not in the center?</strong>
I noticed that with large prints part of my skirt or brims sometimes was printed outside the heat bed print area. Apparently, the printer does not have the correct heat bed center in…