Large-sized seven-degrees-of-freedom (7-DoF) hybrid spray-painting robots combine ample working space and high flexibility. making them lucrative for the spray painting of aircraft and rocket surfaces. However. their kinematic calibration is hindered by gravitational deformation. https://www.bekindtopets.com/bargain-FOX-985-24-100-Performance-Series-2-0-Reservoir-Shock-for-4-5in-Lift-2014-2022-Ram-2500-3500-hot-grab/