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Fair enough, it sounds a bit like my pillar drill which is very hard to eat yourself with compared to all my old stuff. I've been hard wired to be terrified of chucks with keys in by @ad441 dad who smacked me (seriously) when I left the clkey in the chuck of his lathe whilst doing some turning with a "you'll thank me, that's how I learned". It was made all the more shocking as he is very mild mannered. I don't have a cover so much more important for me
Take that key out man! Unless you've aimed it at unpopular dinner guest ;)