Phonoland

Seeking a used record flatter (record flattening machine) that unwarps warped records.

Anyone have a spare to sell?

I have never seen such a device.

I have found that proper vertical storage among other records (without any records leaning) removes the warps from most records. The only exceptions are 78s that are dish warped.

I once bought a pinch-warped warped record at a garage sale, to use as a warp-tracking test record. I made the mistake of storing it properly. Two years later, when I wanted to make a warp test, I got the record out. To my chagrin, it was flat.

One thing you can try is sandwiching a record between two pieces of glass and placing it in the sun horizontally. But don't leave it too long, and don't try it with records with a groove guard.