I think Dremel quit selling just the saw blades. They now sell a device with a safety cover on it. I still buy the raw blades from Ace Hardware that are made by another company. Yes, these can be very dangerous, I hate using it but sometimes it's the only tool that works. I make sure there is nothing in the path of the blade in case it binds up.

Sorry to hear about your stitches, it could have been worse probably. I used the lowest or one click higher than the lowest speed as well for safety. Reading stories like yours makes me want to be more careful as well!