Via JWZ’s LiveJournal I found a method for slicing a bagel into two linked halves. I decided to try it. Video below the cut.
I just did this freehand; this was my first try. Not as hard as the instructions make it sound.
I think it’s pretty cool. Impress your nerdy friends!
2 Comments 
BDan says: It’s not really a Möbius anything, though: the cut has a full twist rather than a half twist, which is why you still get two separate pieces. If you make a true Möbius cut you’ll get one long loop of bagel.
Oh, I know. But that’s what I’ve seen most people call it, and it evokes the right sort of topology ideas in non-experts.
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Dec 8, 2009 
