How hot can a dremel 200 get?
It's pretty hard to break a Dremel. From their FAQ

Q: What are some tips to allow the tool to run cooler?
A: Allowing the tool to run by itself for one minute after use, actually helps cool the tool compared to turning the tool off immediately after use.
Additionally, make sure to avoid covering the vents on the side of the tool with your hands while using it because airflow to the motor is blocked.
Let the speed do the work. Do not bare down on the tool causing the motor to stall. If the motor stall the fan will run slower and therefore not cool the motor as efficiently.
Q: How do I know if the tool is running too hot?
A: A heat sensitive fuse prevents the tool from overheating at a critical level.