Customized version of http://www.thingiverse.com/thing:116042

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=116042

Using the following options:

height = 15
mirror = Yes
wall_thickness = 1.6
shape = [[[37.97260273972603,-17.589041095890412],[36.986301369863014,-18.904109589041095],[36.657534246575345,-20.54794520547945],[35.34246575342466,-22.191780821917806],[35.013698630136986,-23.835616438356162],[34.02739726027397,-25.479452054794518],[33.04109589041096,-27.123287671232877],[31.726027397260278,-28.43835616438356],[30.41095890410959,-30.41095890410959],[29.095890410958905,-32.71232876712329],[27.45205479452055,-35.013698630136986],[26.465753424657535,-36.657534246575345],[25.479452054794518,-37.97260273972603],[23.835616438356162,-39.61643835616438],[22.191780821917806,-41.917808219178085],[21.205479452054796,-43.23287671232877],[19.232876712328768,-45.205479452054796],[17.26027397260274,-44.54794520547945],[13.315068493150685,-42.90410958904109],[7.397260273972602,-40.93150684931507],[5.424657534246576,-40.273972602739725],[3.452054794520548,-39.28767123287671],[1.1506849315068495,-38.301369863013704],[-2.4657534246575343,-37.31506849315068],[-6.082191780821918,-35.67123287671233],[-8.383561643835616,-35.013698630136986],[-10.356164383561644,-34.68493150684931],[-12.657534246575342,-33.369863013698634],[-14.63013698630137,-32.71232876712329],[-17.26027397260274,-31.726027397260278],[-18.904109589041095,-30.73972602739726],[-20.54794520547945,-30.082191780821923],[-22.191780821917806,-29.095890410958905],[-24.82191780821918,-28.10958904109589],[-26.794520547945204,-27.45205479452055],[-28.10958904109589,-26.465753424657535],[-30.082191780821923,-25.808219178082194],[-31.726027397260278,-25.15068493150685],[-33.04109589041096,-24.164383561643838],[-34.68493150684931,-23.178082191780824],[-36.986301369863014,-22.191780821917806],[-39.28767123287671,-20.54794520547945],[-41.26027397260274,-18.575342465753426],[-44.21917808219178,-16.273972602739725],[-49.150684931506845,-12.657534246575342],[-56.05479452054795,-6.73972602739726],[-56.05479452054795,-5.095890410958904],[-55.726027397260275,-3.452054794520548],[-55.06849315068493,-1.808219178082192],[-54.73972602739726,-0.1643835616438356],[-53.75342465753425,1.4794520547945205],[-53.09589041095891,3.7808219178082196],[-52.10958904109589,5.7534246575342465],[-51.45205479452055,7.726027397260274],[-50.465753424657535,9.36986301369863],[-50.136986301369866,11.013698630136986],[-48.821917808219176,12],[-48.821917808219176,13.643835616438357],[-47.83561643835616,15.287671232876713],[-46.52054794520548,16.93150684931507],[-45.863013698630134,18.575342465753426],[-44.87671232876713,20.21917808219178],[-43.89041095890411,22.84931506849315],[-43.23287671232877,24.493150684931507],[-42.24657534246575,26.136986301369863],[-41.26027397260274,28.43835616438356]],[[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65]]]