Planar Shock Absorber

I designed this shock absorber structure which is rigid in the vertical direction, but allows horizontal motion. The idea is, it absorbs the lateral forces generated by your printer's motion, without allowing your printer to rock about, which can mess up your print quality.

The weight is taken by four rigid pillars with spherical ends, and the elasticity is provided by a flexible harness which surrounds the ends of the pillars, and acts as a spring to provide the centering force. The spherica