On 8/10/06, Tony Smith wrote: > Gah! There's always one in a crowd :) > > Yep, everything expands proportionally, including the holes (whatever shape > they may be). I don't know of any homogenous metal that shrinks when > heated... > > Some people remain unconvinced of this, no amount of logic or reason will > sway them. It gets more frustrating when said skeptic states "Well yes, I > have heated up metal to be able to get a bearing in or out, but I still > don't believe the hole gets bigger". Gadzooks! > > Aliens. Must be aliens. Gotta get my tinfoil hat to stop the rays. You know how you "rivet" aircraft aluminum? Drill matching holes in parts, put together, and line up holes. Take rivet from bath of liquid nitrogen. Put into holes. When rivet warms up, it expands to fill holes. Parts are now riveted. Bill -- Psst... Hey, you... Buddy... Want a kitten? straycatblues.petfinder.org -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist