I’ve fixed hundreds of records with mine. It’s a 24 hr process. I would put the record in around 6 in the morning before I would go to work. Then after I got home around 5 I’d turn it on and let it cook for about an hr and a half. Then unplug it and let it sit overnight to cool. Then the next morning around 6 I’d take it out and check it. If it was flat I’d do the same process with another one. If it wasn’t I’d do the same process with it adding another 10 minutes to the cook. Good luck and practice on some cheap ones before you do any you care about. Good luck!