The trick:use a 0.8 mm nozzle [instead of standard 0.4mm]print with layerheight 0.4with skeinforge 39 [or higher] use fill, with solidity 0to get a nice bottom set the 'extra shells on alternating solid layers' and the 'extra shells on base layers' on 999for raftless printing: turn ON raft and set the base and interface layers on 0 set the first layer feed and flow rates at 0.25to not close the vase: remove the to 2 layers in the gcode fileheat up and go!tip for skeinforge developpers: will it be possible to have a top/bottom/both feature...?