Fusion 360 replaces SimStudio Tools
SimStudio Tools is no longer available. Use Fusion 360 to simplify or modify CAD models prior to analysis.
Click 
(Geometry tab > Modify panel > Autodesk Fusion 360) to export your CAD model into Fusion 360. If Fusion 360 is not installed you will be directed to https://www.autodesk.com/mf-install-fusion.
Note: A Fusion 360 Ultimate subscription is available for every Moldflow Synergy subscription, but the Fusion 360 subscription is tied to an individual user. Additional Fusion 360 Ultimate subscriptions can be purchased at https://www.autodesk.com/mf-subscribe-fusion.
Modify your CAD model within Fusion 360. From the Model environment within Fusion 360, select Moldflow > Simulate in Moldflow Insight. If the project is still open in Moldflow Insight, the modified CAD model will be imported as a new study. If Moldflow Insight is closed, you will be prompted to open a new project.