About this 3D model
I propose you my profile file I use to print in NinjaFlex on my Makerbot Replicator 2 : Key parameters are : "rapidMoveFeedRateXY": 90, "retractDistance": 15, "retractRate": 25, "feedrate": 10, "temperature_disabled": 230.0 If you had success with different parameters, just tell me ! Other details, in French, here : http://www.fabriqueurs.com/test-dimpression-en-ninjaflex-sur-makerbot-replicator-2/