>Dry ice is what, -40C? We get those kind of winters up here so your
>pins would fall out <G>. Better to use liquid nitrogen.
>Heating the work with a pinpoint flame is
>pretty easy to do, and you get much larger diameter change for a
>given temperature change when you have a ring, rather than a pin.
>IOW, heating the hole works better than trying to cool the pin.
>And the lower thermal mass of the pin means you'd better be darned fast.
>
>Robert

If these animals are ever exposed to that kind of cold, we'll have bigger
things to worry about.

Mike H.

_________________________________________________________________
Learn how to choose, serve, and enjoy wine at Wine @ MSN.
http://wine.msn.com/

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.