3d printed cube profile ball bushing

This is my first design in thingivers.
This design started my wish which quite stable printer on however height and width extended. My own printer used normal ball bushing but it's limit of vibration and quality was not satisfied me.
I used printer's structure of the 20X20 aluminium profile. One day I made idea which make own ball bushing insert 7mm bearing ball as a moving part ball bushing over the profile structure.
It's very stable and good movement on printing time so I can make ver