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![]() "Paul P" REMOVE paul @ REMOVE ppinyot . REMOVEcom wrote in message ... 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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