Pro-Ject Audio Systems introduces Flatten It, a temperature-controlled vinyl record flattener designed for efficient and safe correction of warped records.https://www.notebookcheck.net/Pro-ject-Audio-System-Flatten-It-machine-restores-warped-records-to-their-original-flat-condition.1019129.0.html
I have the Record Pi. Does exactly the same thing for a fraction of the price. When I bought mine even taking into account the costs associated with importing to the UK it still cost less than the competition including this device. I'm not sure what it would be now following the tariffs.
It's a bit more of a rough and ready solution than other flatteners but all that matters is that it does the job which it does.