Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site tilt.UUCP Path: utzoo!watmath!clyde!floyd!harpo!ulysses!allegra!princeton!down!tilt!chenr From: chenr@tilt.UUCP (Raymond Chen ) Newsgroups: net.audio Subject: Re: Flattening warped records Message-ID: <53@tilt.UUCP> Date: Tue, 10-Apr-84 21:18:27 EST Article-I.D.: tilt.53 Posted: Tue Apr 10 21:18:27 1984 Date-Received: Wed, 11-Apr-84 07:42:45 EST References: <2693@rabbit.UUCP> Organization: Princeton Univ. EECS Lines: 37 >>I bought a record last week that was so warped that my turntable >>would not track it. I therefore decided to try a technique I had >>read about for unwarping the record. Here it is: >> >>Obtain two pieces of 1/4 inch plate glass about 13 inches square. >>You need glass that's heavy enough to keep the record completely flat. >> >>Put the record between the glass sheets and put the whole sandwich >>in the oven. Turn the oven up to 150 degrees for about 10 minutes, >>then turn the oven off and open the door part way. Let the glass and >>the record cool to room temperature (about an hour). >> >>The record came out completely flat! Score one for the good guys! Yeah, but did the grooves? Think about it. You're heating the vinyl to at best, just above the point where it begins to lose its rigidity, then subjecting it to pressure. If it's enough to flatten the vinyl, think about what it must be doing to the grooves cut into the vinyl. Consider also the width of a groove and how little change it takes to turn a cymbal clank into a thud. You might not hear it on YOUR system, but I wouldn't recommend this method to everyone else... Yours for better sound... -- From the Random Fingers of -- Ray Chen {allegra | ihnp4 | mhuxi}!princeton!down!tilt!chenr "It's amazing what a thousand monkeys and a few typewriters can accomplish..."