Yes. Most common method is to put the record in between 2 sheets of flat
glass, put the "sandwich" in direct sunlight until the shellac softens
enough to unwarp the disc, remove sandwich from sunlight and let cool 2
or 3 hours. Voila, a flat disc.
There are exceptions to this method. It doesn't work on Columbia
laminates or "acetate" (lacquer) discs, either.
Ovens have been used, as opposed to sunlight, but not your home oven.
And not a microwave.
The softening temp usually cited is 125 degrees Fahrenheit and most
ovens will not go that low and have any temperature control or reliability.
I'm sure others on list will chime in about all this.
Shai Drori wrote:
> Will heating shellac records flatten them?
> Malcolm Rockwell wrote:
>> I'm not so sure if it'll work. As most of us can attest, heat and
>> vinyl combine to do strange things to a vinyl recording. I did not
>> see a temperature adjustment on the unit. If there was one this item
>> would probably work very well for shellac records.
>> But I am not going to fork out almost $1500 to find out!
>> Brandon Burke wrote:
>>> Just stumbled across this online. Never seen such a thing before:
>>> Thoughts? Has anyone used on of these before?
>>> (Apologies if this has already been discussed.)
>>> Happy friday, Brandon