Are you tired of printing multiple parts for your 3D Printer calibration? Using some of the available methods on Thingiverse have been proven to be less efficient than others, and Vector3D has spent time and researched a proper method.
This method allows for a single print to be completed, then you simply type the numbers into a spreadsheet and make skew adjustments. I have tried this method on my printers, and it does indeed seem to work more efficiently than old methods.
The 5$ price tag of this calibration method is a small price to pay for the time you will save with multiple printers, or even a single printer. You will save 5$ worth of filament by avoiding multiple long calibration prints.