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Old January 14th 09, 12:54 AM posted to rec.radio.amateur.boatanchors
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Default Stuck Setscrew in Aluminum Knob


"Paul P" REMOVE paul @ REMOVE ppinyot . REMOVEcom wrote in
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Product Linear Temperature Expansion Coefficient - ?-


(10-6 m/m K) (10-6 in/in oF)
Aluminum 22.2 12.3
Steel 13.0 7.3

from:
http://www.engineeringtoolbox.com/li...ents-d_95.html


Looks like the aluminum will expand greater than the steel
when both are equally heated.


Paul P.

Now, does the expansion of the knob make the hole larger
or smaller? My instinct is that all dimensions get larger,
hence the screw should be looser. Or maybe the answer is
some dry ice or liquid nitrogen. (That's only half kidding).


--

--
Richard Knoppow
Los Angeles
WB6KBL



 
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