I assume we both use the same cheap chinese linar bearing bearings? :-) I found those to run a little rough at times, but not so much that it would cause binding and/or vibrations. In fact I bought more than required and selected those with NO slop. Those with slop caused noises and sometimes vibration - not constantly nor with constant frequency, but varying a great deal during printing moves.
Will the vibration change or disappear when you disconnect the arms? Also, is the vibration more or less constant regardless of current axis speed or do you feel it happens only at certain speeds which match resonance frequencies? In fact I can *feel* (but barely *hear*) the carriages moving discontinously with a constant overlaid low frequency during printing moves - not sure but this might be due to delta move segmentation.
Will the vibration change or disappear when you disconnect the arms? Also, is the vibration more or less constant regardless of current axis speed or do you feel it happens only at certain speeds which match resonance frequencies? In fact I can *feel* (but barely *hear*) the carriages moving discontinously with a constant overlaid low frequency during printing moves - not sure but this might be due to delta move segmentation.