Top bit on dremel flex tool stopped spinning, how to identify why?

In the middle of a project the tool caught on to a cardigan I was wearing, (i know now flowy cardigans are not for shopwear). The tool then stopped spinning, I took off the collet and switched the tool on again, and it still was not spinning. I have just recently gotten into the dremel hobby, only owning one for a few years. I was doing wood projects and have had no issues. The previously stated project, however, is a glass bird feeder. How do I identify what went wrong, (motor burn out, bit wear, etc). When drilling glass, I used water to lubricate the process, could that have caused any wear and tear? Experts, please lend me some wisdom!
gandalffirework
Asked Jun 10, 2014

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