Allan Adler writes:

I audited a few sessions of a class on metalworking at the
Museum of Fine Arts in Boston. I designed a certain sculpture based on the
Barromean Rings [snip]
cut out the parts with a hacksaw, and spent a lot of time smoothing

Correction: It was a jeweler's saw.
--
Ignorantly,
Allan Adler
* Disclaimer: I am a guest and *not* a member of the MIT CSAIL. My actions and
* comments do not reflect in any way on MIT. Also, I am nowhere near Boston.