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Slic3r Manual

Undulations in the walls of a print may be due to wobble in the Z axis. A thorough analysis of the potential causes is given by whosawhatsis1 in his article "Taxonomy of Z axis artifacts in extrusion-based 3d printing"2, however one point of particular interest for users of Slic3r is the wobble caused by motor steps not matching the pitch of the Z rods thread. This can be addressed by ensuring the Layer Height setting is a multiple of the full step length.

The relevant part of the above paper is quoted here:


  1. http://goo.gl/iOYoK

  2. http://goo.gl/ci9Gz