In article ,
JohnF wrote:

I looked into the "smoke tubes" from Grainger but they're $100.00 for
a kit. I know there is something cheap and relatively safe (can't kill
anyone except management) I could use to figure out air flow in the
shop.

Ideas?

An incense stick works real well, putting out a fine trail of smoke that
will map your air currents. Cheap too.

--
Free men own guns, slaves don't
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