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In Reply to: Record flattening, a failed attempt posted by John-from Seattle on September 17, 2006 at 13:09:29:
I have read an article long time ago about flattening record between 2 clean heat resistant glass plate in an oven.I don't remember the exact temperature but it was in the 100-200 range.
In the article, they insist on the cleaniness of the record and the plates.
Pierre.
Follow Ups:
I got the info from right here on the vinyl archives and wre posted just the otehr week by Tubesforever and others of using ceramic tiles, and I thought I read he used 270, or even 250 as 150 wasn't enough.I'll admit, I just skimmed the article quickly this morning to get the temp he has used but had read it fully at the time he posted the reply later on in the thread.
With excellent results.I bit the bullet and bought 2 13" square 1/4" tempered glass.I cleaned them well,put the clean LP between,put them in the oven pre-heated to 170 deg (270 is way to high!)for 10 minutes.Much to my surprise a badly warped record came out almost dead flat and seems to play perfectly.Oh I took the glass sandwich out of the oven after the ten minutes,put it on the counter and let it cool for at least 3 hours with some phone books on top.
There's one factor in the process I'm trying to figure a way to overcome and thats the thickness of the label doesn't allow for absolute flattening.I'm gonna get some thin Teflon sheet and cut some holes for the label to act as a nice non-stick buffer.This will allow the glass to make contact with the entire record surface.
The only other thing would be to have someone machine some heat resistant material with a recess like a platter,that would be the ultimate for this job!
After a quick search on the web, i find a reference to the article i have read a long time ago (oven baking). Also there is others methods to unwrap LP on that page.
If i where you, i do tests on junk records.
Pierre.
Oops! too fast on the button.
Pierre.
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