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Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ.

RE: I usually leave the LP in the pouch for 12 hours.

Are you using the original pouch with the 12V plug pack? Those had quite a wide range for the controlled temperature (PTC element), so what works for you may be dangerous to the vinyl for someone else. It sounds like your pouch could be on the cooler side.

I used to do similar to you with heavyweight vinyl (mainly because I forgot to turn it off!). Then I found some formulations were badly damaged - I lost about 3 records around Xmas time which was annoying because I hadn't even played them!

Unless you have measured a representative temperature between the rings for what temperature the vinyl would be exposed to and know that it is no higher than around 54°C or so, then the overnight duration should be safe. Otherwise, I would recommend that the temperature be measured between the rings after at least 2 hours (because that's how long it takes for the plattens to heat up to steady state), then make the decision as to the maximum time. I suggest even then leaving it for no longer than a further 2 to 2.5 hours after steady state (for a temperature around 54°C). If the temperature is nearer to 60°C, I would keep the time shorter to no longer than around 2 to 2.5 hours in total, before cooling down.

In practice you only need to take the record near to the heat deflection temperature to reset the shape so leaving it for long periods is actually unnecessary unless the pouch temperature is cooler than 54°C.
Regards Anthony

"Beauty is Truth, Truth Beauty.." Keats

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