Steffan, RolandKuhlen, TorstenB. Froehlich and J. Deisinger and H.-J. Bullinger2014-01-272014-01-27200132118367131727-530Xhttps://doi.org/10.2312/EGVE/EGVE01/141-152We introduce MAESTRO, a Virtual Reality based assembly simulation tool that comprises physically-based modeling, haptic feedback and artificial support mechanisms. The focus of this paper is on the developed support mechanisms and the evaluation of the system. The experimental results show that all three features { haptics, physics, and artificial support { considerably improve user performance and user acceptance during the completion of assembly tasks in a virtual environment.