Andrew Stacey @mathforge.org · Feb 18
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Borrowed a 3d printer. Been wanting to print this for AGES! It's what you get if you cut a bagel or doughnut along a line that twists as you go round. #ITeachMaths #UKMathsChat #mathsky #3DPrinting

37 likes 4 replies

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Replies

Gabrielle Birchak · Feb 23

Now, where do you put the cream cheese?

Jim Simons · Feb 18

I've tried doing that with a real bagel and a knife. Crumbs everywhere.

Andrew Stacey · Feb 19

The alt-text is incorrect - the cut line has a full twist in it, not a half twist as would be needed for a möbius band.

Benny Six-Cats · Feb 19

Link to the STL?