About this 3D model

to damp the vibrations of my printer I designed and made ​​of ABS a presser foot up two neodymium magnets in opposition. Most are big magnets greater is the force that opposes the weight of the structure. my printer that exceeds 30Kg I used two cylindrical magnets from 18x5 mm, but are just enough http://www.youtube.com/watch?v=Rr9P2ksy52Q