hmmmm, if materials behaved this way the second law of thermodynamics would be broken! I encourage you all to read about entropy and IRREVERSIBLE energy! It is a fundamental foundation of how the universe works. There is a real difference between science and science fiction, having a warped lp remain round after removing the warp is FICTION! Furthermore, on the flat edged lps using two pieces of glass in the oven WILL MAKE IT FLAT; no question, but all the groove tops have been flattened as well! You can all believe what you choose, a good start is a BS in ENGINEERING or PHYSICs! I am a retired nuclear chemical engineer who believes in the laws of nature that are explained through mathematical relationships.
How best to eliminate LP warps
I own about 2500 LPs, and I like to think they're flat. Furthermore, I espoused the view that warped LPs ought to be discarded. But lately I have found 2 or 3 of my LPs that do have warps but sound too good and are too precious for the music recorded on them to throw away. So I am in the market for ideas on how to remove warps. I am aware that there was a device on the market that looked like a large waffle maker, to be used for warp removal. I think Furutech made it, but I never see it advertised these days. I am also aware of the DIY method of placing an LP between two glass plates and heating the ensemble. The question there would be how hot and for how long? Any suggestions are welcome, especially opinions on the efficacy of the Furutech. Thanks. Please no comments on vacuum hold down; I think it's a great idea but none of my five turntables has that feature.
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Jazzguy, your principle holds if warps are always the result of local expansion or shrinkage of the vinyl disk. But you can also take a perfectly circular disk and twist it so it becomes”warped” in the horizontal plane (viewed on edge). Such a disk could be flattened and remain circular in the vertical plane ( viewed from above or below). Not sure what this has to do with entropy, but I’m all for it. |
@jazzguy43 , I would suggest that it is more a matter of correctly applying the laws of nature to a given situation that matters. Second Law is especially tricky to use - I’ve seen it used to explain why methane explodes in an enclosed volume, but not otherwise. Of course, it was a bogus ’proof’ - tipoff was that it did not use the particular properties of methane. Experiment is always better than derivation, if feasible, although I’d be the last to abandon the latter. |
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