You could just do a small script for it, this works on single objects:import maya.cmds as cmdslist = cmds.ls(sl=True)for item in list: vtxCount = cmds.polyEvaluate(v=True) cmds.select(cl=True) cmds.select(item+'.vtx[0:'+str(vtxCount)+']', add=True) just throw that onto some hotkey and it will select all the verts of a…
You can run the Merge operation with the mesh selected (object mode) which will automatically execute for all the vertices. If you make a script for the Merge operation with the tolerance settings you want and assign your own hotkey then this should result in something as fast as what you're looking for, I think. Maya is…